Solution :
GIven, An architect builds a scale model of a skyscraper for a land development proposal. The model is 2 feet tall. The scale of the model is 1 in : 12.3 meters.
We know that , 1 foot = 12 inch
Height of model =

Scale of the Model is = 1 inch : 12.3 meters, which means 1 inch of the model measures 12.3 meters of the skyscraper.
So, Total Height of the proposed skyscraper =

Hence, the proposed skyscraper is 295.2 meters tall.