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Finding the Fourth Proportional to 3,375.97, 5,065.78 and 1,644.60

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Solution

The fourth proportional to 3,375.97, 5,065.78 and 1,644.60 is: 2,467.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,375.97 : 5,065.78 = 1,644.60 : x
  2. Step 2: Convert to fraction form
    3,375.97/5,065.78 = 1,644.60/x
  3. Step 3: Cross multiply
    3,375.97x = 5,065.78 × 1,644.60
  4. Step 4: Simplify right side
    3,375.97x = 8,331,175.89
  5. Step 5: Solve for x
    x = 8,331,175.89/3,375.97
  6. Step 6: Final answer
    x = 2,467.79

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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.