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Finding the Fourth Proportional to 111,568.80, 167,174.76 and 100,238.79

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Solution

The fourth proportional to 111,568.80, 167,174.76 and 100,238.79 is: 150,197.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,568.80 : 167,174.76 = 100,238.79 : x
  2. Step 2: Convert to fraction form
    111,568.80/167,174.76 = 100,238.79/x
  3. Step 3: Cross multiply
    111,568.80x = 167,174.76 × 100,238.79
  4. Step 4: Simplify right side
    111,568.80x = 16,757,395,660.94
  5. Step 5: Solve for x
    x = 16,757,395,660.94/111,568.80
  6. Step 6: Final answer
    x = 150,197.87

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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.