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Finding the Fourth Proportional to 1,868.04, 2,578.77 and 1,081.94

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Solution

The fourth proportional to 1,868.04, 2,578.77 and 1,081.94 is: 1,493.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.04 : 2,578.77 = 1,081.94 : x
  2. Step 2: Convert to fraction form
    1,868.04/2,578.77 = 1,081.94/x
  3. Step 3: Cross multiply
    1,868.04x = 2,578.77 × 1,081.94
  4. Step 4: Simplify right side
    1,868.04x = 2,790,061.52
  5. Step 5: Solve for x
    x = 2,790,061.52/1,868.04
  6. Step 6: Final answer
    x = 1,493.58

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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.