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Finding the Fourth Proportional to 71,344.80, 107,017.20 and 41,747.40

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Solution

The fourth proportional to 71,344.80, 107,017.20 and 41,747.40 is: 62,621.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,344.80 : 107,017.20 = 41,747.40 : x
  2. Step 2: Convert to fraction form
    71,344.80/107,017.20 = 41,747.40/x
  3. Step 3: Cross multiply
    71,344.80x = 107,017.20 × 41,747.40
  4. Step 4: Simplify right side
    71,344.80x = 4,467,689,855.28
  5. Step 5: Solve for x
    x = 4,467,689,855.28/71,344.80
  6. Step 6: Final answer
    x = 62,621.10

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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.