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Finding the Fourth Proportional to 1,504.22, 2,255.05 and 682.27

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Solution

The fourth proportional to 1,504.22, 2,255.05 and 682.27 is: 1,022.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,504.22 : 2,255.05 = 682.27 : x
  2. Step 2: Convert to fraction form
    1,504.22/2,255.05 = 682.27/x
  3. Step 3: Cross multiply
    1,504.22x = 2,255.05 × 682.27
  4. Step 4: Simplify right side
    1,504.22x = 1,538,545.62
  5. Step 5: Solve for x
    x = 1,538,545.62/1,504.22
  6. Step 6: Final answer
    x = 1,022.82

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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.