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Finding the Fourth Proportional to 14,963.56, 20,649.66 and 8,679.52

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Solution

The fourth proportional to 14,963.56, 20,649.66 and 8,679.52 is: 11,977.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,963.56 : 20,649.66 = 8,679.52 : x
  2. Step 2: Convert to fraction form
    14,963.56/20,649.66 = 8,679.52/x
  3. Step 3: Cross multiply
    14,963.56x = 20,649.66 × 8,679.52
  4. Step 4: Simplify right side
    14,963.56x = 179,229,136.96
  5. Step 5: Solve for x
    x = 179,229,136.96/14,963.56
  6. Step 6: Final answer
    x = 11,977.71

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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.