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Finding the Fourth Proportional to 15,874.20, 21,906.36 and 8,800.44

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Solution

The fourth proportional to 15,874.20, 21,906.36 and 8,800.44 is: 12,144.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,874.20 : 21,906.36 = 8,800.44 : x
  2. Step 2: Convert to fraction form
    15,874.20/21,906.36 = 8,800.44/x
  3. Step 3: Cross multiply
    15,874.20x = 21,906.36 × 8,800.44
  4. Step 4: Simplify right side
    15,874.20x = 192,785,606.80
  5. Step 5: Solve for x
    x = 192,785,606.80/15,874.20
  6. Step 6: Final answer
    x = 12,144.59

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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.