Finding the Fourth Proportional to 528,209.09, 728,938.47 and 324,157.87
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Solution
The fourth proportional to 528,209.09, 728,938.47 and 324,157.87 is: 447,343.95
Step by Step Solution
- Step 1: Write the proportion equation
528,209.09 : 728,938.47 = 324,157.87 : x - Step 2: Convert to fraction form
528,209.09/728,938.47 = 324,157.87/x - Step 3: Cross multiply
528,209.09x = 728,938.47 × 324,157.87 - Step 4: Simplify right side
528,209.09x = 236,291,141,796.26 - Step 5: Solve for x
x = 236,291,141,796.26/528,209.09 - Step 6: Final answer
x = 447,343.95
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.