{"book":"adl0938","page":514,"text":"۵۰۷\n\nیا طرفین، و دو مقدار میانه را اوساط، یا وسطین مینامند.\nدفعه سوم - خواص تناسب\nروز روز روپیه روپیه\n۷ : ۲۸ :: ۵ : ۲۰\nکلاه کلاه کتب کتب\n۱۴ : ۱۱۲ :: ۳۰ : ۲۴۰\nاز امثله فوق بر طلاب روشن خواهد گشت :-\n(۱) مقدار اول : مقدار دوم = مقدار سوم : مقدار چهارم یعنی\n۷ : ۲۸ = ۵ : ۲۰ ، حالا معلم را باید که بر سر طلاب حاصل ضرب\nاوساط و اطراف امثله فوق را دریافت نموده قاعده ذیل را\nاستخراج نمایند که :-\n(۲) حاصل ضرب اوساط = حاصل ضرب اطراف یعنی ۵x۲۸=۷x۲۰\nو ۲۴۰x۱۴=۱۱۲x۳۰\nدفعه چهارم معلوم نمودن چهارم مقدار تناسب\nحالا استاد را باید که هر سه مقدار اول تناسب را بقرار ذیل تحریر کند :-\nروز روز روپیه روپیه\n۷ : ۲۸ :: ۵ : ج\nکلاه کلاه کتب کتب\n۱۴ : ۱۱۲ :: ۳۰ ج","chars":635,"image":"https://storage.googleapis.com/adl-page-images/adl0938/00514.jpg","first_page":1,"last_page":719,"title":"ʻIlm al-taʻalīm عالم التعليم","permalink":"https://afghanpress.org/book/adl0938/514","canvas":"https://afghanpress.org/iiif/adl0938/canvas/514","source":"https://afghanistandl.nyu.edu/books/adl0938/","source_pdf":"https://afghanistandl.nyu.edu/pdf/adl0938_download.pdf","rights":{"image":{"statement":"Public domain. NYU states: \"All works presented on this website are, unless otherwise indicated, in the public domain. The images available on this website may be freely reproduced, distributed and transmitted by anyone for any purpose, commercial or non-commercial.\"","uri":"http://rightsstatements.org/vocab/NoC-US/1.0/","holder":"New York University Libraries","source":"https://afghanistandl.nyu.edu/about.html","delivery":"Images are served from a copy mirrored by this project, not from NYU's servers, under the reproduction terms above.","endorsement":"This is an independent project. It is not affiliated with, endorsed by, or reviewed by New York University."},"text":{"statement":"Machine-generated transcription, dedicated to the public domain under CC0 1.0. No warranty of accuracy: see the provenance block on every page.","uri":"https://creativecommons.org/publicdomain/zero/1.0/","holder":"Steps Ventures"}},"provenance":{"text_produced_by":"gemini-3.1-pro-preview","thinking_level":"low","read_completed":"2026-08-09","per_page_confidence":null,"per_page_confidence_note":"Not recorded during the corpus run. No calibrated per-page score exists, and none is estimated here.","human_reviewed":false,"accuracy_context":"Roughly two thirds of characters agree with a modern printed edition of the same text. Much of the disagreement is editorial, not misreading. Treat the transcription as a finding aid and read the page image before quoting.","primary_source":"The page image. The text is an index into it."}}