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Finding the Fourth Proportional to 91,493.70, 126,304.16 and 68,841.17

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Solution

The fourth proportional to 91,493.70, 126,304.16 and 68,841.17 is: 95,033.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,493.70 : 126,304.16 = 68,841.17 : x
  2. Step 2: Convert to fraction form
    91,493.70/126,304.16 = 68,841.17/x
  3. Step 3: Cross multiply
    91,493.70x = 126,304.16 × 68,841.17
  4. Step 4: Simplify right side
    91,493.70x = 8,694,926,150.27
  5. Step 5: Solve for x
    x = 8,694,926,150.27/91,493.70
  6. Step 6: Final answer
    x = 95,033.06

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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.