A sign somewhere in the United States says that London, England, is 4386 miles away and that Tokyo, Japan, is 6182 miles away.
Where in the U.S. is the sign?
(Consider the earth to be a perfect sphere of radius 3959 miles, and that London is at 51°30’ North, 0°10’ West and Tokyo is at 35°40’ North, 139°45’ East.)
Is the following location in the U.S.?
Circular (W. Longitude) 95d40'
Zenith (Latitude) 39d00'
If so, then that's my answer. This may not be in the states as there are two locations on Earth that will satisfy the distance requirements, I haven't found the other yet