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Finding the Fourth Proportional to 220,999.50, 331,597.62 and 115,793.88

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Solution

The fourth proportional to 220,999.50, 331,597.62 and 115,793.88 is: 173,742.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,999.50 : 331,597.62 = 115,793.88 : x
  2. Step 2: Convert to fraction form
    220,999.50/331,597.62 = 115,793.88/x
  3. Step 3: Cross multiply
    220,999.50x = 331,597.62 × 115,793.88
  4. Step 4: Simplify right side
    220,999.50x = 38,396,975,018.57
  5. Step 5: Solve for x
    x = 38,396,975,018.57/220,999.50
  6. Step 6: Final answer
    x = 173,742.36

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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.