Math word problems - distance on a map

[Guest]

On a map, the length from Cleveland to New York is 7 cm, from Cleveland to Antlanta is 10 cm, and from New York to Atlanta is 13cm. If on a larger map the length from Cleveland to New York is 17.5cm, what are the other lengths?

[Math Tutor]

If the length from Cleveland to New York is 7 cm
and on the second map it is 17.5 cm so it it increased 17.5 / 7 = 2.5
So every length on the second map is 2.5 longer.
From Cleveland to Antlanta is 10 cm on the first map on the second it is 2.5 longer so it is 10 * 2.5 = 25 cm
What about the third length on the second map?