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Finding the Fourth Proportional to 220,524.80, 330,422.40 and 126,867.20

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Solution

The fourth proportional to 220,524.80, 330,422.40 and 126,867.20 is: 190,090.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,524.80 : 330,422.40 = 126,867.20 : x
  2. Step 2: Convert to fraction form
    220,524.80/330,422.40 = 126,867.20/x
  3. Step 3: Cross multiply
    220,524.80x = 330,422.40 × 126,867.20
  4. Step 4: Simplify right side
    220,524.80x = 41,919,764,705.28
  5. Step 5: Solve for x
    x = 41,919,764,705.28/220,524.80
  6. Step 6: Final answer
    x = 190,090.93

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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.