Proportionality | Ratio, Constant & Inverse | Britannica
https://www.britannica.com/science/proportionality
WEBMar 12, 2024 · proportionality, In algebra, equality between two ratios. In the expression a / b = c / d, a and b are in the same proportion as c and d. A proportion is typically set up to solve a word problem in which one of its four quantities is unknown. It is solved by multiplying one numerator by the opposite denominator and equating the product to that ...
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