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Finding the Fourth Proportional to 3,105.82, 4,286.03 and 1,708.56

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Solution

The fourth proportional to 3,105.82, 4,286.03 and 1,708.56 is: 2,357.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.82 : 4,286.03 = 1,708.56 : x
  2. Step 2: Convert to fraction form
    3,105.82/4,286.03 = 1,708.56/x
  3. Step 3: Cross multiply
    3,105.82x = 4,286.03 × 1,708.56
  4. Step 4: Simplify right side
    3,105.82x = 7,322,939.42
  5. Step 5: Solve for x
    x = 7,322,939.42/3,105.82
  6. Step 6: Final answer
    x = 2,357.81

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