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Finding the Fourth Proportional to 111,371.13, 166,977.33 and 52,174.53

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Solution

The fourth proportional to 111,371.13, 166,977.33 and 52,174.53 is: 78,224.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,371.13 : 166,977.33 = 52,174.53 : x
  2. Step 2: Convert to fraction form
    111,371.13/166,977.33 = 52,174.53/x
  3. Step 3: Cross multiply
    111,371.13x = 166,977.33 × 52,174.53
  4. Step 4: Simplify right side
    111,371.13x = 8,711,963,713.40
  5. Step 5: Solve for x
    x = 8,711,963,713.40/111,371.13
  6. Step 6: Final answer
    x = 78,224.61

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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.