Respuesta :

the answer is 550,000 mark as brainliest plz
Equanimity
75,364 rounds down to 75,000, as it's not 500 or higher.
472,756 rounds up to 473,000, as it's 500 or higher.
473,000 + 75,000 = 548,000.
548,000 is your estimated sum.
Hope this helps!