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Finding the Fourth Proportional to 2,297.67, 3,446.73 and 911.13

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Solution

The fourth proportional to 2,297.67, 3,446.73 and 911.13 is: 1,366.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,297.67 : 3,446.73 = 911.13 : x
  2. Step 2: Convert to fraction form
    2,297.67/3,446.73 = 911.13/x
  3. Step 3: Cross multiply
    2,297.67x = 3,446.73 × 911.13
  4. Step 4: Simplify right side
    2,297.67x = 3,140,419.10
  5. Step 5: Solve for x
    x = 3,140,419.10/2,297.67
  6. Step 6: Final answer
    x = 1,366.78

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Why These Related Problems?

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