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Finding the Fourth Proportional to 100,981.76, 151,179.21 and 58,732.97

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Solution

The fourth proportional to 100,981.76, 151,179.21 and 58,732.97 is: 87,928.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,981.76 : 151,179.21 = 58,732.97 : x
  2. Step 2: Convert to fraction form
    100,981.76/151,179.21 = 58,732.97/x
  3. Step 3: Cross multiply
    100,981.76x = 151,179.21 × 58,732.97
  4. Step 4: Simplify right side
    100,981.76x = 8,879,203,249.66
  5. Step 5: Solve for x
    x = 8,879,203,249.66/100,981.76
  6. Step 6: Final answer
    x = 87,928.79

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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.