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Finding the Fourth Proportional to 11,750.67, 17,620.34 and 6,821.82

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Solution

The fourth proportional to 11,750.67, 17,620.34 and 6,821.82 is: 10,229.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,750.67 : 17,620.34 = 6,821.82 : x
  2. Step 2: Convert to fraction form
    11,750.67/17,620.34 = 6,821.82/x
  3. Step 3: Cross multiply
    11,750.67x = 17,620.34 × 6,821.82
  4. Step 4: Simplify right side
    11,750.67x = 120,202,753.71
  5. Step 5: Solve for x
    x = 120,202,753.71/11,750.67
  6. Step 6: Final answer
    x = 10,229.44

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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.