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Finding the Fourth Proportional to 6,708.68, 9,257.80 and 3,914

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Solution

The fourth proportional to 6,708.68, 9,257.80 and 3,914 is: 5,401.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,708.68 : 9,257.80 = 3,914 : x
  2. Step 2: Convert to fraction form
    6,708.68/9,257.80 = 3,914/x
  3. Step 3: Cross multiply
    6,708.68x = 9,257.80 × 3,914
  4. Step 4: Simplify right side
    6,708.68x = 36,235,029.20
  5. Step 5: Solve for x
    x = 36,235,029.20/6,708.68
  6. Step 6: Final answer
    x = 5,401.22

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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.