When the Slowpoke Marathon began, the ratio of runners to joggers was 2 to 19. A total of 4200 participants began the race (each either a runner or a jogger, but not both), but 450 joggers dropped out of the race along the way. Out of the remaining participants, who are runners, 16 % of them dropped out of the race. If everyone else finished the race, then what was the simplified ratio of runners to joggers among those who finished the race?