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Finding the Fourth Proportional to 36,912.91, 55,302.49 and 16,939.12

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Solution

The fourth proportional to 36,912.91, 55,302.49 and 16,939.12 is: 25,377.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,912.91 : 55,302.49 = 16,939.12 : x
  2. Step 2: Convert to fraction form
    36,912.91/55,302.49 = 16,939.12/x
  3. Step 3: Cross multiply
    36,912.91x = 55,302.49 × 16,939.12
  4. Step 4: Simplify right side
    36,912.91x = 936,775,472.06
  5. Step 5: Solve for x
    x = 936,775,472.06/36,912.91
  6. Step 6: Final answer
    x = 25,377.99

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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.