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Finding the Fourth Proportional to 108,159.91, 162,341.66 and 54,890.15

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Solution

The fourth proportional to 108,159.91, 162,341.66 and 54,890.15 is: 82,386.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,159.91 : 162,341.66 = 54,890.15 : x
  2. Step 2: Convert to fraction form
    108,159.91/162,341.66 = 54,890.15/x
  3. Step 3: Cross multiply
    108,159.91x = 162,341.66 × 54,890.15
  4. Step 4: Simplify right side
    108,159.91x = 8,910,957,394.17
  5. Step 5: Solve for x
    x = 8,910,957,394.17/108,159.91
  6. Step 6: Final answer
    x = 82,386.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.