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Finding the Fourth Proportional to 167,923.80, 251,974.26 and 74,439

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Solution

The fourth proportional to 167,923.80, 251,974.26 and 74,439 is: 111,697.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,923.80 : 251,974.26 = 74,439 : x
  2. Step 2: Convert to fraction form
    167,923.80/251,974.26 = 74,439/x
  3. Step 3: Cross multiply
    167,923.80x = 251,974.26 × 74,439
  4. Step 4: Simplify right side
    167,923.80x = 18,756,711,940.14
  5. Step 5: Solve for x
    x = 18,756,711,940.14/167,923.80
  6. Step 6: Final answer
    x = 111,697.76

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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.