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Finding the Fourth Proportional to 221,433.90, 332,199.45 and 71,648.70

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Solution

The fourth proportional to 221,433.90, 332,199.45 and 71,648.70 is: 107,488.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,433.90 : 332,199.45 = 71,648.70 : x
  2. Step 2: Convert to fraction form
    221,433.90/332,199.45 = 71,648.70/x
  3. Step 3: Cross multiply
    221,433.90x = 332,199.45 × 71,648.70
  4. Step 4: Simplify right side
    221,433.90x = 23,801,658,733.22
  5. Step 5: Solve for x
    x = 23,801,658,733.22/221,433.90
  6. Step 6: Final answer
    x = 107,488.78

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.