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Finding the Fourth Proportional to 16,272.60, 24,408.90 and 5,179.20

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Solution

The fourth proportional to 16,272.60, 24,408.90 and 5,179.20 is: 7,768.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,272.60 : 24,408.90 = 5,179.20 : x
  2. Step 2: Convert to fraction form
    16,272.60/24,408.90 = 5,179.20/x
  3. Step 3: Cross multiply
    16,272.60x = 24,408.90 × 5,179.20
  4. Step 4: Simplify right side
    16,272.60x = 126,418,574.88
  5. Step 5: Solve for x
    x = 126,418,574.88/16,272.60
  6. Step 6: Final answer
    x = 7,768.80

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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.