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Finding the Fourth Proportional to 3,659.28, 5,489.16 and 1,062

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Solution

The fourth proportional to 3,659.28, 5,489.16 and 1,062 is: 1,593.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,659.28 : 5,489.16 = 1,062 : x
  2. Step 2: Convert to fraction form
    3,659.28/5,489.16 = 1,062/x
  3. Step 3: Cross multiply
    3,659.28x = 5,489.16 × 1,062
  4. Step 4: Simplify right side
    3,659.28x = 5,829,487.92
  5. Step 5: Solve for x
    x = 5,829,487.92/3,659.28
  6. Step 6: Final answer
    x = 1,593.07

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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.