We will have to use proportions: [tex] \frac{42.9}{253.1} = \frac{6.2}{x} [/tex] Cross multiplying we get [tex]42.9x = 6.2 \times 253.1[/tex] Now divide: [tex]x = \frac{6.2 \times 253.1}{42.9} [/tex] Solve to tenths place we get [tex]x = 36.6[/tex] The woman casts a 36.6 ft long shadow.