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Finding the Fourth Proportional to 111,591.91, 154,023.66 and 63,872.95

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Solution

The fourth proportional to 111,591.91, 154,023.66 and 63,872.95 is: 88,160.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,591.91 : 154,023.66 = 63,872.95 : x
  2. Step 2: Convert to fraction form
    111,591.91/154,023.66 = 63,872.95/x
  3. Step 3: Cross multiply
    111,591.91x = 154,023.66 × 63,872.95
  4. Step 4: Simplify right side
    111,591.91x = 9,837,945,534.00
  5. Step 5: Solve for x
    x = 9,837,945,534.00/111,591.91
  6. Step 6: Final answer
    x = 88,160.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.