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Finding the Fourth Proportional to 3,052.53, 4,578.38 and 861.44

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Solution

The fourth proportional to 3,052.53, 4,578.38 and 861.44 is: 1,292.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,052.53 : 4,578.38 = 861.44 : x
  2. Step 2: Convert to fraction form
    3,052.53/4,578.38 = 861.44/x
  3. Step 3: Cross multiply
    3,052.53x = 4,578.38 × 861.44
  4. Step 4: Simplify right side
    3,052.53x = 3,943,976.78
  5. Step 5: Solve for x
    x = 3,943,976.78/3,052.53
  6. Step 6: Final answer
    x = 1,292.04

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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.