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Finding the Fourth Proportional to 68,581.20, 103,044.60 and 43,633.20

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Solution

The fourth proportional to 68,581.20, 103,044.60 and 43,633.20 is: 65,559.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,581.20 : 103,044.60 = 43,633.20 : x
  2. Step 2: Convert to fraction form
    68,581.20/103,044.60 = 43,633.20/x
  3. Step 3: Cross multiply
    68,581.20x = 103,044.60 × 43,633.20
  4. Step 4: Simplify right side
    68,581.20x = 4,496,165,640.72
  5. Step 5: Solve for x
    x = 4,496,165,640.72/68,581.20
  6. Step 6: Final answer
    x = 65,559.74

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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.