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Finding the Fourth Proportional to 41,406.80, 62,110.20 and 19,212.80

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Solution

The fourth proportional to 41,406.80, 62,110.20 and 19,212.80 is: 28,819.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,406.80 : 62,110.20 = 19,212.80 : x
  2. Step 2: Convert to fraction form
    41,406.80/62,110.20 = 19,212.80/x
  3. Step 3: Cross multiply
    41,406.80x = 62,110.20 × 19,212.80
  4. Step 4: Simplify right side
    41,406.80x = 1,193,310,850.56
  5. Step 5: Solve for x
    x = 1,193,310,850.56/41,406.80
  6. Step 6: Final answer
    x = 28,819.20

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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.