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Finding the Fourth Proportional to 92,479.70, 138,624.51 and 39,844.82

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Solution

The fourth proportional to 92,479.70, 138,624.51 and 39,844.82 is: 59,726.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,479.70 : 138,624.51 = 39,844.82 : x
  2. Step 2: Convert to fraction form
    92,479.70/138,624.51 = 39,844.82/x
  3. Step 3: Cross multiply
    92,479.70x = 138,624.51 × 39,844.82
  4. Step 4: Simplify right side
    92,479.70x = 5,523,468,648.54
  5. Step 5: Solve for x
    x = 5,523,468,648.54/92,479.70
  6. Step 6: Final answer
    x = 59,726.28

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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.