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Finding the Fourth Proportional to 5,791.91, 8,687.86 and 3,325.15

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Solution

The fourth proportional to 5,791.91, 8,687.86 and 3,325.15 is: 4,987.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,791.91 : 8,687.86 = 3,325.15 : x
  2. Step 2: Convert to fraction form
    5,791.91/8,687.86 = 3,325.15/x
  3. Step 3: Cross multiply
    5,791.91x = 8,687.86 × 3,325.15
  4. Step 4: Simplify right side
    5,791.91x = 28,888,440.23
  5. Step 5: Solve for x
    x = 28,888,440.23/5,791.91
  6. Step 6: Final answer
    x = 4,987.73

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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.