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Finding the Fourth Proportional to 124,842.88, 172,269.90 and 73,857.52

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Solution

The fourth proportional to 124,842.88, 172,269.90 and 73,857.52 is: 101,915.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,842.88 : 172,269.90 = 73,857.52 : x
  2. Step 2: Convert to fraction form
    124,842.88/172,269.90 = 73,857.52/x
  3. Step 3: Cross multiply
    124,842.88x = 172,269.90 × 73,857.52
  4. Step 4: Simplify right side
    124,842.88x = 12,723,427,584.65
  5. Step 5: Solve for x
    x = 12,723,427,584.65/124,842.88
  6. Step 6: Final answer
    x = 101,915.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.