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Finding the Fourth Proportional to 168,707.20, 253,060.80 and 165,791.20

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Solution

The fourth proportional to 168,707.20, 253,060.80 and 165,791.20 is: 248,686.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,707.20 : 253,060.80 = 165,791.20 : x
  2. Step 2: Convert to fraction form
    168,707.20/253,060.80 = 165,791.20/x
  3. Step 3: Cross multiply
    168,707.20x = 253,060.80 × 165,791.20
  4. Step 4: Simplify right side
    168,707.20x = 41,955,253,704.96
  5. Step 5: Solve for x
    x = 41,955,253,704.96/168,707.20
  6. Step 6: Final answer
    x = 248,686.80

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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.