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Finding the Fourth Proportional to 2,327.32, 3,491.20 and 766.68

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Solution

The fourth proportional to 2,327.32, 3,491.20 and 766.68 is: 1,150.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,327.32 : 3,491.20 = 766.68 : x
  2. Step 2: Convert to fraction form
    2,327.32/3,491.20 = 766.68/x
  3. Step 3: Cross multiply
    2,327.32x = 3,491.20 × 766.68
  4. Step 4: Simplify right side
    2,327.32x = 2,676,633.22
  5. Step 5: Solve for x
    x = 2,676,633.22/2,327.32
  6. Step 6: Final answer
    x = 1,150.09

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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.