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Finding the Fourth Proportional to 167,626.80, 251,274.12 and 78,721.15

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Solution

The fourth proportional to 167,626.80, 251,274.12 and 78,721.15 is: 118,003.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,626.80 : 251,274.12 = 78,721.15 : x
  2. Step 2: Convert to fraction form
    167,626.80/251,274.12 = 78,721.15/x
  3. Step 3: Cross multiply
    167,626.80x = 251,274.12 × 78,721.15
  4. Step 4: Simplify right side
    167,626.80x = 19,780,587,063.45
  5. Step 5: Solve for x
    x = 19,780,587,063.45/167,626.80
  6. Step 6: Final answer
    x = 118,003.73

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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.