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Finding the Fourth Proportional to 9,251.99, 13,879.81 and 3,408.65

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Solution

The fourth proportional to 9,251.99, 13,879.81 and 3,408.65 is: 5,113.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,251.99 : 13,879.81 = 3,408.65 : x
  2. Step 2: Convert to fraction form
    9,251.99/13,879.81 = 3,408.65/x
  3. Step 3: Cross multiply
    9,251.99x = 13,879.81 × 3,408.65
  4. Step 4: Simplify right side
    9,251.99x = 47,311,453.32
  5. Step 5: Solve for x
    x = 47,311,453.32/9,251.99
  6. Step 6: Final answer
    x = 5,113.65

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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.