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Finding the Fourth Proportional to 5,682.85, 8,511.94 and 2,755

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Solution

The fourth proportional to 5,682.85, 8,511.94 and 2,755 is: 4,126.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,682.85 : 8,511.94 = 2,755 : x
  2. Step 2: Convert to fraction form
    5,682.85/8,511.94 = 2,755/x
  3. Step 3: Cross multiply
    5,682.85x = 8,511.94 × 2,755
  4. Step 4: Simplify right side
    5,682.85x = 23,450,394.70
  5. Step 5: Solve for x
    x = 23,450,394.70/5,682.85
  6. Step 6: Final answer
    x = 4,126.52

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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.