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Finding the Fourth Proportional to 3,475.69, 5,213.11 and 1,395.61

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Solution

The fourth proportional to 3,475.69, 5,213.11 and 1,395.61 is: 2,093.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,475.69 : 5,213.11 = 1,395.61 : x
  2. Step 2: Convert to fraction form
    3,475.69/5,213.11 = 1,395.61/x
  3. Step 3: Cross multiply
    3,475.69x = 5,213.11 × 1,395.61
  4. Step 4: Simplify right side
    3,475.69x = 7,275,468.45
  5. Step 5: Solve for x
    x = 7,275,468.45/3,475.69
  6. Step 6: Final answer
    x = 2,093.24

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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.