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Finding the Fourth Proportional to 6,863.72, 9,472.01 and 3,719.97

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Solution

The fourth proportional to 6,863.72, 9,472.01 and 3,719.97 is: 5,133.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,863.72 : 9,472.01 = 3,719.97 : x
  2. Step 2: Convert to fraction form
    6,863.72/9,472.01 = 3,719.97/x
  3. Step 3: Cross multiply
    6,863.72x = 9,472.01 × 3,719.97
  4. Step 4: Simplify right side
    6,863.72x = 35,235,574.44
  5. Step 5: Solve for x
    x = 35,235,574.44/6,863.72
  6. Step 6: Final answer
    x = 5,133.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.