Have you ever played dominoes? In the standard set of dominoes,

7 out of 28 tiles, or one-fourth of the tiles, are doubles.

The ratios \(\frac{7}{28}\) and \(\frac{1}{4}\) are equivalent.

That is \(\frac{7}{28}\) = \(\frac{1}{4}\).

The equation \(\frac{7}{28}\) = \(\frac{1}{4}\) is an example of a proportion.

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