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Finding the Fourth Proportional to 73,427.10, 110,140.65 and 68,469.90

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Solution

The fourth proportional to 73,427.10, 110,140.65 and 68,469.90 is: 102,704.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,427.10 : 110,140.65 = 68,469.90 : x
  2. Step 2: Convert to fraction form
    73,427.10/110,140.65 = 68,469.90/x
  3. Step 3: Cross multiply
    73,427.10x = 110,140.65 × 68,469.90
  4. Step 4: Simplify right side
    73,427.10x = 7,541,319,291.44
  5. Step 5: Solve for x
    x = 7,541,319,291.44/73,427.10
  6. Step 6: Final answer
    x = 102,704.85

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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.