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Finding the Fourth Proportional to 71,332.20, 106,957.80 and 26,960.40

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Solution

The fourth proportional to 71,332.20, 106,957.80 and 26,960.40 is: 40,425.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,332.20 : 106,957.80 = 26,960.40 : x
  2. Step 2: Convert to fraction form
    71,332.20/106,957.80 = 26,960.40/x
  3. Step 3: Cross multiply
    71,332.20x = 106,957.80 × 26,960.40
  4. Step 4: Simplify right side
    71,332.20x = 2,883,625,071.12
  5. Step 5: Solve for x
    x = 2,883,625,071.12/71,332.20
  6. Step 6: Final answer
    x = 40,425.29

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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.