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Finding the Fourth Proportional to 49,604.67, 68,438.88 and 28,379.88

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Solution

The fourth proportional to 49,604.67, 68,438.88 and 28,379.88 is: 39,155.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,604.67 : 68,438.88 = 28,379.88 : x
  2. Step 2: Convert to fraction form
    49,604.67/68,438.88 = 28,379.88/x
  3. Step 3: Cross multiply
    49,604.67x = 68,438.88 × 28,379.88
  4. Step 4: Simplify right side
    49,604.67x = 1,942,287,201.73
  5. Step 5: Solve for x
    x = 1,942,287,201.73/49,604.67
  6. Step 6: Final answer
    x = 39,155.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.