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Finding the Fourth Proportional to 529,066.88, 730,117.56 and 287,354.16

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Solution

The fourth proportional to 529,066.88, 730,117.56 and 287,354.16 is: 396,551.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,066.88 : 730,117.56 = 287,354.16 : x
  2. Step 2: Convert to fraction form
    529,066.88/730,117.56 = 287,354.16/x
  3. Step 3: Cross multiply
    529,066.88x = 730,117.56 × 287,354.16
  4. Step 4: Simplify right side
    529,066.88x = 209,802,318,155.05
  5. Step 5: Solve for x
    x = 209,802,318,155.05/529,066.88
  6. Step 6: Final answer
    x = 396,551.60

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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.