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Finding the Fourth Proportional to 192,715.66, 288,907.37 and 74,469.97

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Solution

The fourth proportional to 192,715.66, 288,907.37 and 74,469.97 is: 111,640.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,715.66 : 288,907.37 = 74,469.97 : x
  2. Step 2: Convert to fraction form
    192,715.66/288,907.37 = 74,469.97/x
  3. Step 3: Cross multiply
    192,715.66x = 288,907.37 × 74,469.97
  4. Step 4: Simplify right side
    192,715.66x = 21,514,923,176.68
  5. Step 5: Solve for x
    x = 21,514,923,176.68/192,715.66
  6. Step 6: Final answer
    x = 111,640.76

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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.