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Finding the Fourth Proportional to 6,414.44, 9,620.72 and 3,948

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Solution

The fourth proportional to 6,414.44, 9,620.72 and 3,948 is: 5,921.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,414.44 : 9,620.72 = 3,948 : x
  2. Step 2: Convert to fraction form
    6,414.44/9,620.72 = 3,948/x
  3. Step 3: Cross multiply
    6,414.44x = 9,620.72 × 3,948
  4. Step 4: Simplify right side
    6,414.44x = 37,982,602.56
  5. Step 5: Solve for x
    x = 37,982,602.56/6,414.44
  6. Step 6: Final answer
    x = 5,921.42

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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.