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Finding the Fourth Proportional to 14,847.54, 20,491.91 and 8,474.10

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Solution

The fourth proportional to 14,847.54, 20,491.91 and 8,474.10 is: 11,695.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,847.54 : 20,491.91 = 8,474.10 : x
  2. Step 2: Convert to fraction form
    14,847.54/20,491.91 = 8,474.10/x
  3. Step 3: Cross multiply
    14,847.54x = 20,491.91 × 8,474.10
  4. Step 4: Simplify right side
    14,847.54x = 173,650,494.53
  5. Step 5: Solve for x
    x = 173,650,494.53/14,847.54
  6. Step 6: Final answer
    x = 11,695.57

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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.