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Finding the Fourth Proportional to 8,771.98, 12,105.21 and 4,793.11

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Solution

The fourth proportional to 8,771.98, 12,105.21 and 4,793.11 is: 6,614.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,771.98 : 12,105.21 = 4,793.11 : x
  2. Step 2: Convert to fraction form
    8,771.98/12,105.21 = 4,793.11/x
  3. Step 3: Cross multiply
    8,771.98x = 12,105.21 × 4,793.11
  4. Step 4: Simplify right side
    8,771.98x = 58,021,603.10
  5. Step 5: Solve for x
    x = 58,021,603.10/8,771.98
  6. Step 6: Final answer
    x = 6,614.42

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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.