Interest rates on fixed-rate mortgage loans inched up this week amid mixed economic data, according to Freddie Mac. The GSE’s weekly survey puts the average 30-year fixed rate at 4.52 percent for the week ending July 21, and the 15-year rate at 3.66 percent. Adjustable-rate mortgages (ARMs) were mixed in Freddie’s latest survey. The company’s analysts calculate average interest rates based on data from about 125 lenders across the country. Article Feed