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Finding the Fourth Proportional to 70,917.20, 106,375.80 and 37,624.40

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Solution

The fourth proportional to 70,917.20, 106,375.80 and 37,624.40 is: 56,436.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,917.20 : 106,375.80 = 37,624.40 : x
  2. Step 2: Convert to fraction form
    70,917.20/106,375.80 = 37,624.40/x
  3. Step 3: Cross multiply
    70,917.20x = 106,375.80 × 37,624.40
  4. Step 4: Simplify right side
    70,917.20x = 4,002,325,649.52
  5. Step 5: Solve for x
    x = 4,002,325,649.52/70,917.20
  6. Step 6: Final answer
    x = 56,436.60

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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.