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Finding the Fourth Proportional to 92,691.07, 138,913.56 and 48,305.90

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Solution

The fourth proportional to 92,691.07, 138,913.56 and 48,305.90 is: 72,394.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,691.07 : 138,913.56 = 48,305.90 : x
  2. Step 2: Convert to fraction form
    92,691.07/138,913.56 = 48,305.90/x
  3. Step 3: Cross multiply
    92,691.07x = 138,913.56 × 48,305.90
  4. Step 4: Simplify right side
    92,691.07x = 6,710,344,885.29
  5. Step 5: Solve for x
    x = 6,710,344,885.29/92,691.07
  6. Step 6: Final answer
    x = 72,394.73

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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.