Chantal DuBois in Brussels. Chantal DuBois lives in Brussels. She can buy a U.S. dollar for 0.7693. Christopher Keller, living in New York City, can buy a euro for $1.3243. What is the foreign exchange rate between the dollar and the euro? The exchange rate when buying dollars in Brussels is US dollars per euro. (Round to four decimal places.) Chantal DuBois in Brussels. Chantal DuBois lives in Brussels. She can buy a U.S. dollar for 0.7693. Christopher Keller, living in New York City, can buy a euro for $1.3243. What is the foreign exchange rate between the dollar and the euro? The exchange rate when buying dollars in Brussels is US dollars per euro. (Round to four decimal places.)