The distance between two points on a vertical photograph is ab and the corresponding ground distance is AB. For the following data, compute the average photographic scale along the line ab.
(a)* ab = 2.41 in.; AB = 4820 ft.
(b) ab = 5.29 in.; AB = 13,218 ft.
(c) ab = 107.389 mm; AB = 536.943 m.