2004 AMC 8 Problem 1

On a map, a 12-centimeter length represents 72 kilometers. How many kilometers does a 17-centimeter length represent?

\textbf{(A)}\ 6\qquad\textbf{(B)}\ 102\qquad\textbf{(C)}\ 204\qquad\textbf{(D)}\ 864\qquad\textbf{(E)}\ 1224

Full credit goes to MAA for authoring these problems. These problems were taken on the AOPS website.