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Finding the Fourth Proportional to 1,338.29, 1,846.81 and 748.82

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Solution

The fourth proportional to 1,338.29, 1,846.81 and 748.82 is: 1,033.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338.29 : 1,846.81 = 748.82 : x
  2. Step 2: Convert to fraction form
    1,338.29/1,846.81 = 748.82/x
  3. Step 3: Cross multiply
    1,338.29x = 1,846.81 × 748.82
  4. Step 4: Simplify right side
    1,338.29x = 1,382,928.26
  5. Step 5: Solve for x
    x = 1,382,928.26/1,338.29
  6. Step 6: Final answer
    x = 1,033.35

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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.