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Finding the Fourth Proportional to 41,286.80, 61,930.20 and 29,709.20

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Solution

The fourth proportional to 41,286.80, 61,930.20 and 29,709.20 is: 44,563.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,286.80 : 61,930.20 = 29,709.20 : x
  2. Step 2: Convert to fraction form
    41,286.80/61,930.20 = 29,709.20/x
  3. Step 3: Cross multiply
    41,286.80x = 61,930.20 × 29,709.20
  4. Step 4: Simplify right side
    41,286.80x = 1,839,896,697.84
  5. Step 5: Solve for x
    x = 1,839,896,697.84/41,286.80
  6. Step 6: Final answer
    x = 44,563.80

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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.