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Finding the Fourth Proportional to 3,591.12, 5,375.60 and 2,007.60

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Solution

The fourth proportional to 3,591.12, 5,375.60 and 2,007.60 is: 3,005.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,591.12 : 5,375.60 = 2,007.60 : x
  2. Step 2: Convert to fraction form
    3,591.12/5,375.60 = 2,007.60/x
  3. Step 3: Cross multiply
    3,591.12x = 5,375.60 × 2,007.60
  4. Step 4: Simplify right side
    3,591.12x = 10,792,054.56
  5. Step 5: Solve for x
    x = 10,792,054.56/3,591.12
  6. Step 6: Final answer
    x = 3,005.21

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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.