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Finding the Fourth Proportional to 7,793.85, 10,755.43 and 4,257.07

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Solution

The fourth proportional to 7,793.85, 10,755.43 and 4,257.07 is: 5,874.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,793.85 : 10,755.43 = 4,257.07 : x
  2. Step 2: Convert to fraction form
    7,793.85/10,755.43 = 4,257.07/x
  3. Step 3: Cross multiply
    7,793.85x = 10,755.43 × 4,257.07
  4. Step 4: Simplify right side
    7,793.85x = 45,786,618.39
  5. Step 5: Solve for x
    x = 45,786,618.39/7,793.85
  6. Step 6: Final answer
    x = 5,874.71

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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.