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Finding the Fourth Proportional to 40,640.20, 60,986.22 and 17,266.64

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Solution

The fourth proportional to 40,640.20, 60,986.22 and 17,266.64 is: 25,910.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,640.20 : 60,986.22 = 17,266.64 : x
  2. Step 2: Convert to fraction form
    40,640.20/60,986.22 = 17,266.64/x
  3. Step 3: Cross multiply
    40,640.20x = 60,986.22 × 17,266.64
  4. Step 4: Simplify right side
    40,640.20x = 1,053,026,714.44
  5. Step 5: Solve for x
    x = 1,053,026,714.44/40,640.20
  6. Step 6: Final answer
    x = 25,910.97

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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.