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Finding the Fourth Proportional to 539,609.20, 744,661.78 and 297,892.10

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Solution

The fourth proportional to 539,609.20, 744,661.78 and 297,892.10 is: 411,091.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,609.20 : 744,661.78 = 297,892.10 : x
  2. Step 2: Convert to fraction form
    539,609.20/744,661.78 = 297,892.10/x
  3. Step 3: Cross multiply
    539,609.20x = 744,661.78 × 297,892.10
  4. Step 4: Simplify right side
    539,609.20x = 221,828,861,433.94
  5. Step 5: Solve for x
    x = 221,828,861,433.94/539,609.20
  6. Step 6: Final answer
    x = 411,091.70

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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.