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Finding the Fourth Proportional to 11,229.70, 16,843.20 and 4,655.20

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Solution

The fourth proportional to 11,229.70, 16,843.20 and 4,655.20 is: 6,982.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,229.70 : 16,843.20 = 4,655.20 : x
  2. Step 2: Convert to fraction form
    11,229.70/16,843.20 = 4,655.20/x
  3. Step 3: Cross multiply
    11,229.70x = 16,843.20 × 4,655.20
  4. Step 4: Simplify right side
    11,229.70x = 78,408,464.64
  5. Step 5: Solve for x
    x = 78,408,464.64/11,229.70
  6. Step 6: Final answer
    x = 6,982.24

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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.