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Finding the Fourth Proportional to 2,324.91, 3,486.61 and 764.56

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Solution

The fourth proportional to 2,324.91, 3,486.61 and 764.56 is: 1,146.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,324.91 : 3,486.61 = 764.56 : x
  2. Step 2: Convert to fraction form
    2,324.91/3,486.61 = 764.56/x
  3. Step 3: Cross multiply
    2,324.91x = 3,486.61 × 764.56
  4. Step 4: Simplify right side
    2,324.91x = 2,665,722.54
  5. Step 5: Solve for x
    x = 2,665,722.54/2,324.91
  6. Step 6: Final answer
    x = 1,146.59

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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.