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Finding the Fourth Proportional to 9,251.75, 13,879.34 and 2,928.22

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Solution

The fourth proportional to 9,251.75, 13,879.34 and 2,928.22 is: 4,392.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,251.75 : 13,879.34 = 2,928.22 : x
  2. Step 2: Convert to fraction form
    9,251.75/13,879.34 = 2,928.22/x
  3. Step 3: Cross multiply
    9,251.75x = 13,879.34 × 2,928.22
  4. Step 4: Simplify right side
    9,251.75x = 40,641,753.65
  5. Step 5: Solve for x
    x = 40,641,753.65/9,251.75
  6. Step 6: Final answer
    x = 4,392.87

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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.