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Finding the Fourth Proportional to 223,891.70, 335,830.35 and 74,138.90

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Solution

The fourth proportional to 223,891.70, 335,830.35 and 74,138.90 is: 111,205.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,891.70 : 335,830.35 = 74,138.90 : x
  2. Step 2: Convert to fraction form
    223,891.70/335,830.35 = 74,138.90/x
  3. Step 3: Cross multiply
    223,891.70x = 335,830.35 × 74,138.90
  4. Step 4: Simplify right side
    223,891.70x = 24,898,092,735.62
  5. Step 5: Solve for x
    x = 24,898,092,735.62/223,891.70
  6. Step 6: Final answer
    x = 111,205.97

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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.