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Finding the Fourth Proportional to 33,115.20, 49,672.80 and 29,428.80

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Solution

The fourth proportional to 33,115.20, 49,672.80 and 29,428.80 is: 44,143.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,115.20 : 49,672.80 = 29,428.80 : x
  2. Step 2: Convert to fraction form
    33,115.20/49,672.80 = 29,428.80/x
  3. Step 3: Cross multiply
    33,115.20x = 49,672.80 × 29,428.80
  4. Step 4: Simplify right side
    33,115.20x = 1,461,810,896.64
  5. Step 5: Solve for x
    x = 1,461,810,896.64/33,115.20
  6. Step 6: Final answer
    x = 44,143.20

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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.