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Ratio Calculator

A ratio indicates how many times one number contains another. Ratios are vital for mixing ingredients, scaling blueprint models, adjusting photography aspect ratios, and financial analysis.

Calculated Result
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    Formula & Mechanics

    A / B = C / D ⟹ D = (B × C) / A

    In any proportional relationship, the cross-multiplication products are equal: A × D = B × C. If one value is unknown, cross-multiply and divide.

    Worked Step-by-Step Example

    Scenario: Solve 2 : 5 = 10 : D

    1. Set up equation: 2 × D = 5 × 10
    2. Simplify right side: 5 × 10 = 50
    3. Divide by 2: D = 50 ÷ 2 = 25

    D = 25. The ratio 2:5 is equivalent to 10:25.

    Frequently Asked Questions

    What is a simplified ratio?
    A ratio expressed with the smallest possible whole numbers by dividing both sides by their Greatest Common Divisor (GCD).

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