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Finding the Fourth Proportional to 34,228.28, 51,225.60 and 28,687.88

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Solution

The fourth proportional to 34,228.28, 51,225.60 and 28,687.88 is: 42,933.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,228.28 : 51,225.60 = 28,687.88 : x
  2. Step 2: Convert to fraction form
    34,228.28/51,225.60 = 28,687.88/x
  3. Step 3: Cross multiply
    34,228.28x = 51,225.60 × 28,687.88
  4. Step 4: Simplify right side
    34,228.28x = 1,469,553,865.73
  5. Step 5: Solve for x
    x = 1,469,553,865.73/34,228.28
  6. Step 6: Final answer
    x = 42,933.91

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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.