US long-term mortgage rates rise; 30-year loan at 3.73%

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WASHINGTON -- U.S. long-term mortgage rates rose this week. Still, rates remain at historically low levels as a lure to prospective homebuyers. Mortgage buyer Freddie Mac says the average rate for a 30-year fixed-rate mortgage increased to 3.73% from 3.68% last week. The benchmark rate stood at 4.63% a year ago. The average rate on a 15-year mortgage rose to 3.19% from 3.14%.