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Finding the Fourth Proportional to 6,708.72, 9,257.91 and 3,724.49

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Solution

The fourth proportional to 6,708.72, 9,257.91 and 3,724.49 is: 5,139.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,708.72 : 9,257.91 = 3,724.49 : x
  2. Step 2: Convert to fraction form
    6,708.72/9,257.91 = 3,724.49/x
  3. Step 3: Cross multiply
    6,708.72x = 9,257.91 × 3,724.49
  4. Step 4: Simplify right side
    6,708.72x = 34,480,993.22
  5. Step 5: Solve for x
    x = 34,480,993.22/6,708.72
  6. Step 6: Final answer
    x = 5,139.73

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1.5x scale

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.