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Finding the Fourth Proportional to 70,982.20, 106,473.30 and 60,427.90

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Solution

The fourth proportional to 70,982.20, 106,473.30 and 60,427.90 is: 90,641.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,982.20 : 106,473.30 = 60,427.90 : x
  2. Step 2: Convert to fraction form
    70,982.20/106,473.30 = 60,427.90/x
  3. Step 3: Cross multiply
    70,982.20x = 106,473.30 × 60,427.90
  4. Step 4: Simplify right side
    70,982.20x = 6,433,957,925.07
  5. Step 5: Solve for x
    x = 6,433,957,925.07/70,982.20
  6. Step 6: Final answer
    x = 90,641.85

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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.