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Finding the Fourth Proportional to 5,491.92, 8,255.72 and 4,408.16

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Solution

The fourth proportional to 5,491.92, 8,255.72 and 4,408.16 is: 6,626.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,491.92 : 8,255.72 = 4,408.16 : x
  2. Step 2: Convert to fraction form
    5,491.92/8,255.72 = 4,408.16/x
  3. Step 3: Cross multiply
    5,491.92x = 8,255.72 × 4,408.16
  4. Step 4: Simplify right side
    5,491.92x = 36,392,534.68
  5. Step 5: Solve for x
    x = 36,392,534.68/5,491.92
  6. Step 6: Final answer
    x = 6,626.56

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1.5x scale

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.