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Finding the Fourth Proportional to 124,963.75, 172,449.98 and 68,375.13

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Solution

The fourth proportional to 124,963.75, 172,449.98 and 68,375.13 is: 94,357.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,963.75 : 172,449.98 = 68,375.13 : x
  2. Step 2: Convert to fraction form
    124,963.75/172,449.98 = 68,375.13/x
  3. Step 3: Cross multiply
    124,963.75x = 172,449.98 × 68,375.13
  4. Step 4: Simplify right side
    124,963.75x = 11,791,289,801.00
  5. Step 5: Solve for x
    x = 11,791,289,801.00/124,963.75
  6. Step 6: Final answer
    x = 94,357.68

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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.