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An equation stating that two ratios are equal is called a proportion.

__Method 1:__

Ratio of the first fraction

Ratio of the second fraction

Check the ratios of fractions.

The ratios are equal. So, the ratios form a proportion.

__Method 2:__

Write the equation

According to Means-extremes Property of proportion: If, then .

(Cross products)

(Multiply:)

The cross products are equal. So, the ratios form a proportion.

Yes.

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