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Finding the Fourth Proportional to 92,046.52, 126,930.66 and 86,688.88

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Solution

The fourth proportional to 92,046.52, 126,930.66 and 86,688.88 is: 119,542.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,046.52 : 126,930.66 = 86,688.88 : x
  2. Step 2: Convert to fraction form
    92,046.52/126,930.66 = 86,688.88/x
  3. Step 3: Cross multiply
    92,046.52x = 126,930.66 × 86,688.88
  4. Step 4: Simplify right side
    92,046.52x = 11,003,476,753.06
  5. Step 5: Solve for x
    x = 11,003,476,753.06/92,046.52
  6. Step 6: Final answer
    x = 119,542.56

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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.