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Finding the Fourth Proportional to 3,659.18, 5,489.15 and 1,062.11

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Solution

The fourth proportional to 3,659.18, 5,489.15 and 1,062.11 is: 1,593.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,659.18 : 5,489.15 = 1,062.11 : x
  2. Step 2: Convert to fraction form
    3,659.18/5,489.15 = 1,062.11/x
  3. Step 3: Cross multiply
    3,659.18x = 5,489.15 × 1,062.11
  4. Step 4: Simplify right side
    3,659.18x = 5,830,089.52
  5. Step 5: Solve for x
    x = 5,830,089.52/3,659.18
  6. Step 6: Final answer
    x = 1,593.28

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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.