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Finding the Fourth Proportional to 168,239.88, 252,407.49 and 68,471.67

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Solution

The fourth proportional to 168,239.88, 252,407.49 and 68,471.67 is: 102,726.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,239.88 : 252,407.49 = 68,471.67 : x
  2. Step 2: Convert to fraction form
    168,239.88/252,407.49 = 68,471.67/x
  3. Step 3: Cross multiply
    168,239.88x = 252,407.49 × 68,471.67
  4. Step 4: Simplify right side
    168,239.88x = 17,282,763,050.57
  5. Step 5: Solve for x
    x = 17,282,763,050.57/168,239.88
  6. Step 6: Final answer
    x = 102,726.91

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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.