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Finding the Fourth Proportional to 1,966.53, 2,713.86 and 1,082.43

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Solution

The fourth proportional to 1,966.53, 2,713.86 and 1,082.43 is: 1,493.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,966.53 : 2,713.86 = 1,082.43 : x
  2. Step 2: Convert to fraction form
    1,966.53/2,713.86 = 1,082.43/x
  3. Step 3: Cross multiply
    1,966.53x = 2,713.86 × 1,082.43
  4. Step 4: Simplify right side
    1,966.53x = 2,937,563.48
  5. Step 5: Solve for x
    x = 2,937,563.48/1,966.53
  6. Step 6: Final answer
    x = 1,493.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.