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Finding the Fourth Proportional to 20,367.91, 30,551.91 and 5,576.98

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Solution

The fourth proportional to 20,367.91, 30,551.91 and 5,576.98 is: 8,365.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,367.91 : 30,551.91 = 5,576.98 : x
  2. Step 2: Convert to fraction form
    20,367.91/30,551.91 = 5,576.98/x
  3. Step 3: Cross multiply
    20,367.91x = 30,551.91 × 5,576.98
  4. Step 4: Simplify right side
    20,367.91x = 170,387,391.03
  5. Step 5: Solve for x
    x = 170,387,391.03/20,367.91
  6. Step 6: Final answer
    x = 8,365.48

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.