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Finding the Fourth Proportional to 7,961.88, 10,986.24 and 4,424.88

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Solution

The fourth proportional to 7,961.88, 10,986.24 and 4,424.88 is: 6,105.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,961.88 : 10,986.24 = 4,424.88 : x
  2. Step 2: Convert to fraction form
    7,961.88/10,986.24 = 4,424.88/x
  3. Step 3: Cross multiply
    7,961.88x = 10,986.24 × 4,424.88
  4. Step 4: Simplify right side
    7,961.88x = 48,612,793.65
  5. Step 5: Solve for x
    x = 48,612,793.65/7,961.88
  6. Step 6: Final answer
    x = 6,105.69

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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.