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Finding the Fourth Proportional to 16,239.60, 24,373.80 and 13,906.80

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Solution

The fourth proportional to 16,239.60, 24,373.80 and 13,906.80 is: 20,872.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,239.60 : 24,373.80 = 13,906.80 : x
  2. Step 2: Convert to fraction form
    16,239.60/24,373.80 = 13,906.80/x
  3. Step 3: Cross multiply
    16,239.60x = 24,373.80 × 13,906.80
  4. Step 4: Simplify right side
    16,239.60x = 338,961,561.84
  5. Step 5: Solve for x
    x = 338,961,561.84/16,239.60
  6. Step 6: Final answer
    x = 20,872.53

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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.