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Finding the Fourth Proportional to 125,091.92, 172,646.98 and 71,379.20

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Solution

The fourth proportional to 125,091.92, 172,646.98 and 71,379.20 is: 98,514.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,091.92 : 172,646.98 = 71,379.20 : x
  2. Step 2: Convert to fraction form
    125,091.92/172,646.98 = 71,379.20/x
  3. Step 3: Cross multiply
    125,091.92x = 172,646.98 × 71,379.20
  4. Step 4: Simplify right side
    125,091.92x = 12,323,403,314.82
  5. Step 5: Solve for x
    x = 12,323,403,314.82/125,091.92
  6. Step 6: Final answer
    x = 98,514.78

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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.