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Finding the Fourth Proportional to 73,124.70, 109,690.65 and 38,132.70

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Solution

The fourth proportional to 73,124.70, 109,690.65 and 38,132.70 is: 57,200.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,124.70 : 109,690.65 = 38,132.70 : x
  2. Step 2: Convert to fraction form
    73,124.70/109,690.65 = 38,132.70/x
  3. Step 3: Cross multiply
    73,124.70x = 109,690.65 × 38,132.70
  4. Step 4: Simplify right side
    73,124.70x = 4,182,800,649.26
  5. Step 5: Solve for x
    x = 4,182,800,649.26/73,124.70
  6. Step 6: Final answer
    x = 57,200.93

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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.