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Finding the Fourth Proportional to 92,306.79, 138,478.82 and 29,136.71

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Solution

The fourth proportional to 92,306.79, 138,478.82 and 29,136.71 is: 43,710.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,306.79 : 138,478.82 = 29,136.71 : x
  2. Step 2: Convert to fraction form
    92,306.79/138,478.82 = 29,136.71/x
  3. Step 3: Cross multiply
    92,306.79x = 138,478.82 × 29,136.71
  4. Step 4: Simplify right side
    92,306.79x = 4,034,817,420.00
  5. Step 5: Solve for x
    x = 4,034,817,420.00/92,306.79
  6. Step 6: Final answer
    x = 43,710.95

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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.