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Finding the Fourth Proportional to 3,344.48, 5,016.32 and 879.20

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Solution

The fourth proportional to 3,344.48, 5,016.32 and 879.20 is: 1,318.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,344.48 : 5,016.32 = 879.20 : x
  2. Step 2: Convert to fraction form
    3,344.48/5,016.32 = 879.20/x
  3. Step 3: Cross multiply
    3,344.48x = 5,016.32 × 879.20
  4. Step 4: Simplify right side
    3,344.48x = 4,410,348.54
  5. Step 5: Solve for x
    x = 4,410,348.54/3,344.48
  6. Step 6: Final answer
    x = 1,318.69

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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.