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Finding the Fourth Proportional to 2,265.84, 3,398.46 and 878.22

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Solution

The fourth proportional to 2,265.84, 3,398.46 and 878.22 is: 1,317.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,265.84 : 3,398.46 = 878.22 : x
  2. Step 2: Convert to fraction form
    2,265.84/3,398.46 = 878.22/x
  3. Step 3: Cross multiply
    2,265.84x = 3,398.46 × 878.22
  4. Step 4: Simplify right side
    2,265.84x = 2,984,595.54
  5. Step 5: Solve for x
    x = 2,984,595.54/2,265.84
  6. Step 6: Final answer
    x = 1,317.21

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.