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Finding the Fourth Proportional to 125,741.59, 173,480.90 and 71,287.92

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Solution

The fourth proportional to 125,741.59, 173,480.90 and 71,287.92 is: 98,353.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,741.59 : 173,480.90 = 71,287.92 : x
  2. Step 2: Convert to fraction form
    125,741.59/173,480.90 = 71,287.92/x
  3. Step 3: Cross multiply
    125,741.59x = 173,480.90 × 71,287.92
  4. Step 4: Simplify right side
    125,741.59x = 12,367,092,164.29
  5. Step 5: Solve for x
    x = 12,367,092,164.29/125,741.59
  6. Step 6: Final answer
    x = 98,353.24

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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.