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Finding the missing side length in similar triangles using proportions.

A diagram showing two similar triangles with labeled side lengths, illustrating how to find the missing side length using proportions. The calculation shows 8/18 = x/21.6, resulting in x = 9.6 cm. A man appears in the bottom right corner.

A diagram showing two similar triangles with labeled side lengths, illustrating how to find the missing side length using proportions. The calculation shows 8/18 = x/21.6, resulting in x = 9.6 cm. A man appears in the bottom right corner.

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