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Finding the Fourth Proportional to 125,093.53, 172,627.77 and 67,731.86

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Solution

The fourth proportional to 125,093.53, 172,627.77 and 67,731.86 is: 93,469.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,093.53 : 172,627.77 = 67,731.86 : x
  2. Step 2: Convert to fraction form
    125,093.53/172,627.77 = 67,731.86/x
  3. Step 3: Cross multiply
    125,093.53x = 172,627.77 × 67,731.86
  4. Step 4: Simplify right side
    125,093.53x = 11,692,399,949.75
  5. Step 5: Solve for x
    x = 11,692,399,949.75/125,093.53
  6. Step 6: Final answer
    x = 93,469.26

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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.