How do I solve using the Cross Product Property? (Ratios & Proportions) Also I’m trying to find x.

10% of 1,900,000. show me how you got the answer

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?

Define multiplicative inverse. give an example of a number and its multiplicative inverse.