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Finding the Fourth Proportional to 125,104.20, 172,645.20 and 71,396.40

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Solution

The fourth proportional to 125,104.20, 172,645.20 and 71,396.40 is: 98,527.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,104.20 : 172,645.20 = 71,396.40 : x
  2. Step 2: Convert to fraction form
    125,104.20/172,645.20 = 71,396.40/x
  3. Step 3: Cross multiply
    125,104.20x = 172,645.20 × 71,396.40
  4. Step 4: Simplify right side
    125,104.20x = 12,326,245,757.28
  5. Step 5: Solve for x
    x = 12,326,245,757.28/125,104.20
  6. Step 6: Final answer
    x = 98,527.83

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