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Finding the Fourth Proportional to 5,191.22, 7,794.66 and 3,255.86

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Solution

The fourth proportional to 5,191.22, 7,794.66 and 3,255.86 is: 4,888.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,191.22 : 7,794.66 = 3,255.86 : x
  2. Step 2: Convert to fraction form
    5,191.22/7,794.66 = 3,255.86/x
  3. Step 3: Cross multiply
    5,191.22x = 7,794.66 × 3,255.86
  4. Step 4: Simplify right side
    5,191.22x = 25,378,321.71
  5. Step 5: Solve for x
    x = 25,378,321.71/5,191.22
  6. Step 6: Final answer
    x = 4,888.70

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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.