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Finding the Fourth Proportional to 7,793.86, 10,755.84 and 4,257.22

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Solution

The fourth proportional to 7,793.86, 10,755.84 and 4,257.22 is: 5,875.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,793.86 : 10,755.84 = 4,257.22 : x
  2. Step 2: Convert to fraction form
    7,793.86/10,755.84 = 4,257.22/x
  3. Step 3: Cross multiply
    7,793.86x = 10,755.84 × 4,257.22
  4. Step 4: Simplify right side
    7,793.86x = 45,789,977.16
  5. Step 5: Solve for x
    x = 45,789,977.16/7,793.86
  6. Step 6: Final answer
    x = 5,875.13

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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.