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Mathematics
OpenStudy (anonymous):

A triangle drawn on a map has sides of lengths 9.0 cm, 12 cm, and 15 cm. The shortest of the corresponding real-life distances is 118 km. Find the longest of the real-life distances (in kilometers). Round your answer to the nearest whole number.

OpenStudy (anonymous):

it's a simple ratio problem: 9 cm: 118 km 15 cm: x solve for x by cross multiplying 15(118) = 9x x=196.66666 which rounds up to 197.

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