DETROIT — Ford Motor Co. posted a 1st-quarter internet decline of $3.1 billion attributable to a fall in the benefit of its Rivian stake but affirmed assistance for the calendar year in spite of ongoing manufacturing constraints. Ford was worthwhile right before accounting for the Rivian expense, even though altered earnings fell 41 {a78e43caf781a4748142ac77894e52b42fd2247cba0219deedaee5032d61bfc9} from