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Finding the Fourth Proportional to 14,658.48, 20,230.02 and 8,372.88

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Solution

The fourth proportional to 14,658.48, 20,230.02 and 8,372.88 is: 11,555.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,658.48 : 20,230.02 = 8,372.88 : x
  2. Step 2: Convert to fraction form
    14,658.48/20,230.02 = 8,372.88/x
  3. Step 3: Cross multiply
    14,658.48x = 20,230.02 × 8,372.88
  4. Step 4: Simplify right side
    14,658.48x = 169,383,529.86
  5. Step 5: Solve for x
    x = 169,383,529.86/14,658.48
  6. Step 6: Final answer
    x = 11,555.33

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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.