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Finding the Fourth Proportional to 125,200.48, 172,781.09 and 68,611.86

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Solution

The fourth proportional to 125,200.48, 172,781.09 and 68,611.86 is: 94,686.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,200.48 : 172,781.09 = 68,611.86 : x
  2. Step 2: Convert to fraction form
    125,200.48/172,781.09 = 68,611.86/x
  3. Step 3: Cross multiply
    125,200.48x = 172,781.09 × 68,611.86
  4. Step 4: Simplify right side
    125,200.48x = 11,854,831,957.73
  5. Step 5: Solve for x
    x = 11,854,831,957.73/125,200.48
  6. Step 6: Final answer
    x = 94,686.79

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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.