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Finding the Fourth Proportional to 259,614.67, 389,418.86 and 67,472.07

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Solution

The fourth proportional to 259,614.67, 389,418.86 and 67,472.07 is: 101,207.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,614.67 : 389,418.86 = 67,472.07 : x
  2. Step 2: Convert to fraction form
    259,614.67/389,418.86 = 67,472.07/x
  3. Step 3: Cross multiply
    259,614.67x = 389,418.86 × 67,472.07
  4. Step 4: Simplify right side
    259,614.67x = 26,274,896,581.24
  5. Step 5: Solve for x
    x = 26,274,896,581.24/259,614.67
  6. Step 6: Final answer
    x = 101,207.29

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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.