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Finding the Fourth Proportional to 8,611.44, 11,882.82 and 5,255.16

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Solution

The fourth proportional to 8,611.44, 11,882.82 and 5,255.16 is: 7,251.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,611.44 : 11,882.82 = 5,255.16 : x
  2. Step 2: Convert to fraction form
    8,611.44/11,882.82 = 5,255.16/x
  3. Step 3: Cross multiply
    8,611.44x = 11,882.82 × 5,255.16
  4. Step 4: Simplify right side
    8,611.44x = 62,446,120.35
  5. Step 5: Solve for x
    x = 62,446,120.35/8,611.44
  6. Step 6: Final answer
    x = 7,251.53

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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.