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Finding the Fourth Proportional to 3,375.66, 5,065.50 and 1,186.22

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Solution

The fourth proportional to 3,375.66, 5,065.50 and 1,186.22 is: 1,780.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,375.66 : 5,065.50 = 1,186.22 : x
  2. Step 2: Convert to fraction form
    3,375.66/5,065.50 = 1,186.22/x
  3. Step 3: Cross multiply
    3,375.66x = 5,065.50 × 1,186.22
  4. Step 4: Simplify right side
    3,375.66x = 6,008,797.41
  5. Step 5: Solve for x
    x = 6,008,797.41/3,375.66
  6. Step 6: Final answer
    x = 1,780.04

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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.