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Finding the Fourth Proportional to 7,951.20, 11,932.20 and 4,441.20

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Solution

The fourth proportional to 7,951.20, 11,932.20 and 4,441.20 is: 6,664.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,951.20 : 11,932.20 = 4,441.20 : x
  2. Step 2: Convert to fraction form
    7,951.20/11,932.20 = 4,441.20/x
  3. Step 3: Cross multiply
    7,951.20x = 11,932.20 × 4,441.20
  4. Step 4: Simplify right side
    7,951.20x = 52,993,286.64
  5. Step 5: Solve for x
    x = 52,993,286.64/7,951.20
  6. Step 6: Final answer
    x = 6,664.82

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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.