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Finding the Fourth Proportional to 71,366.60, 107,049.90 and 44,985.80

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Solution

The fourth proportional to 71,366.60, 107,049.90 and 44,985.80 is: 67,478.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,366.60 : 107,049.90 = 44,985.80 : x
  2. Step 2: Convert to fraction form
    71,366.60/107,049.90 = 44,985.80/x
  3. Step 3: Cross multiply
    71,366.60x = 107,049.90 × 44,985.80
  4. Step 4: Simplify right side
    71,366.60x = 4,815,725,391.42
  5. Step 5: Solve for x
    x = 4,815,725,391.42/71,366.60
  6. Step 6: Final answer
    x = 67,478.70

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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.