The distance between two cities in the United States can be approximated by the following formula where lat1 and long1 are the latitude and longitude of city 1 and lat2 and long2 are the latitude and longitude of city 2:

Ted€™s daughter is getting married, and he is inviting relatives from 15 different locations in the United States. The file Wedding gives the longitude, latitude, and number of relatives in each of the 15 locations. Ted would like to find the location to hold the wedding that minimizes the demand-weighted distance, where demand is the number of relatives at each location. Find the optimal location.

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69V (lat lat)(long long)