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Finding the Fourth Proportional to 108,596.90, 162,911.55 and 38,470.70

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Solution

The fourth proportional to 108,596.90, 162,911.55 and 38,470.70 is: 57,711.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,596.90 : 162,911.55 = 38,470.70 : x
  2. Step 2: Convert to fraction form
    108,596.90/162,911.55 = 38,470.70/x
  3. Step 3: Cross multiply
    108,596.90x = 162,911.55 × 38,470.70
  4. Step 4: Simplify right side
    108,596.90x = 6,267,321,366.59
  5. Step 5: Solve for x
    x = 6,267,321,366.59/108,596.90
  6. Step 6: Final answer
    x = 57,711.79

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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.