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Finding the Fourth Proportional to 11,411.20, 17,108.70 and 5,174.20

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Solution

The fourth proportional to 11,411.20, 17,108.70 and 5,174.20 is: 7,757.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,411.20 : 17,108.70 = 5,174.20 : x
  2. Step 2: Convert to fraction form
    11,411.20/17,108.70 = 5,174.20/x
  3. Step 3: Cross multiply
    11,411.20x = 17,108.70 × 5,174.20
  4. Step 4: Simplify right side
    11,411.20x = 88,523,835.54
  5. Step 5: Solve for x
    x = 88,523,835.54/11,411.20
  6. Step 6: Final answer
    x = 7,757.63

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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.