## Basic College Mathematics (9th Edition)

Let's assume the x is length of the real boxcar . Now, we will write the proportion for the given details $\frac{1 inch }{16 ft} = \frac{4.25 inch}{x ft}$ so. $1\times x= 4.25\times 16$ (cross multiply) $x = 68$ 68 ft is the length of the real box car.