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Finding the Fourth Proportional to 124,753.96, 172,140.55 and 71,040.03

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Solution

The fourth proportional to 124,753.96, 172,140.55 and 71,040.03 is: 98,023.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,753.96 : 172,140.55 = 71,040.03 : x
  2. Step 2: Convert to fraction form
    124,753.96/172,140.55 = 71,040.03/x
  3. Step 3: Cross multiply
    124,753.96x = 172,140.55 × 71,040.03
  4. Step 4: Simplify right side
    124,753.96x = 12,228,869,836.22
  5. Step 5: Solve for x
    x = 12,228,869,836.22/124,753.96
  6. Step 6: Final answer
    x = 98,023.90

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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.