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Finding the Fourth Proportional to 83,480.10, 125,220.15 and 73,966.65

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Solution

The fourth proportional to 83,480.10, 125,220.15 and 73,966.65 is: 110,949.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,480.10 : 125,220.15 = 73,966.65 : x
  2. Step 2: Convert to fraction form
    83,480.10/125,220.15 = 73,966.65/x
  3. Step 3: Cross multiply
    83,480.10x = 125,220.15 × 73,966.65
  4. Step 4: Simplify right side
    83,480.10x = 9,262,115,008.00
  5. Step 5: Solve for x
    x = 9,262,115,008.00/83,480.10
  6. Step 6: Final answer
    x = 110,949.98

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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.