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Finding the Fourth Proportional to 8,755.25, 12,082.25 and 5,611.44

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Solution

The fourth proportional to 8,755.25, 12,082.25 and 5,611.44 is: 7,743.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,755.25 : 12,082.25 = 5,611.44 : x
  2. Step 2: Convert to fraction form
    8,755.25/12,082.25 = 5,611.44/x
  3. Step 3: Cross multiply
    8,755.25x = 12,082.25 × 5,611.44
  4. Step 4: Simplify right side
    8,755.25x = 67,798,762.68
  5. Step 5: Solve for x
    x = 67,798,762.68/8,755.25
  6. Step 6: Final answer
    x = 7,743.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.