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Finding the Fourth Proportional to 1,338.71, 1,847.42 and 749.25

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Solution

The fourth proportional to 1,338.71, 1,847.42 and 749.25 is: 1,033.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338.71 : 1,847.42 = 749.25 : x
  2. Step 2: Convert to fraction form
    1,338.71/1,847.42 = 749.25/x
  3. Step 3: Cross multiply
    1,338.71x = 1,847.42 × 749.25
  4. Step 4: Simplify right side
    1,338.71x = 1,384,175.69
  5. Step 5: Solve for x
    x = 1,384,175.69/1,338.71
  6. Step 6: Final answer
    x = 1,033.97

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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.