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Finding the Fourth Proportional to 91,859.91, 137,789.86 and 29,530.41

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Solution

The fourth proportional to 91,859.91, 137,789.86 and 29,530.41 is: 44,295.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,859.91 : 137,789.86 = 29,530.41 : x
  2. Step 2: Convert to fraction form
    91,859.91/137,789.86 = 29,530.41/x
  3. Step 3: Cross multiply
    91,859.91x = 137,789.86 × 29,530.41
  4. Step 4: Simplify right side
    91,859.91x = 4,068,990,524.47
  5. Step 5: Solve for x
    x = 4,068,990,524.47/91,859.91
  6. Step 6: Final answer
    x = 44,295.61

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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.