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Finding the Fourth Proportional to 577,717.92, 866,401.92 and 156,939.12

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Solution

The fourth proportional to 577,717.92, 866,401.92 and 156,939.12 is: 235,361.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,717.92 : 866,401.92 = 156,939.12 : x
  2. Step 2: Convert to fraction form
    577,717.92/866,401.92 = 156,939.12/x
  3. Step 3: Cross multiply
    577,717.92x = 866,401.92 × 156,939.12
  4. Step 4: Simplify right side
    577,717.92x = 135,972,354,891.11
  5. Step 5: Solve for x
    x = 135,972,354,891.11/577,717.92
  6. Step 6: Final answer
    x = 235,361.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.