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Finding the Fourth Proportional to 11,361.20, 17,041.86 and 3,965.62

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Solution

The fourth proportional to 11,361.20, 17,041.86 and 3,965.62 is: 5,948.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,361.20 : 17,041.86 = 3,965.62 : x
  2. Step 2: Convert to fraction form
    11,361.20/17,041.86 = 3,965.62/x
  3. Step 3: Cross multiply
    11,361.20x = 17,041.86 × 3,965.62
  4. Step 4: Simplify right side
    11,361.20x = 67,581,540.85
  5. Step 5: Solve for x
    x = 67,581,540.85/11,361.20
  6. Step 6: Final answer
    x = 5,948.45

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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.