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Finding the Fourth Proportional to 168,762.20, 253,143.30 and 159,576.80

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Solution

The fourth proportional to 168,762.20, 253,143.30 and 159,576.80 is: 239,365.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,762.20 : 253,143.30 = 159,576.80 : x
  2. Step 2: Convert to fraction form
    168,762.20/253,143.30 = 159,576.80/x
  3. Step 3: Cross multiply
    168,762.20x = 253,143.30 × 159,576.80
  4. Step 4: Simplify right side
    168,762.20x = 40,395,797,755.44
  5. Step 5: Solve for x
    x = 40,395,797,755.44/168,762.20
  6. Step 6: Final answer
    x = 239,365.20

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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.