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Finding the Fourth Proportional to 168,003.72, 252,006 and 115,253.28

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Solution

The fourth proportional to 168,003.72, 252,006 and 115,253.28 is: 172,880.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,003.72 : 252,006 = 115,253.28 : x
  2. Step 2: Convert to fraction form
    168,003.72/252,006 = 115,253.28/x
  3. Step 3: Cross multiply
    168,003.72x = 252,006 × 115,253.28
  4. Step 4: Simplify right side
    168,003.72x = 29,044,518,079.68
  5. Step 5: Solve for x
    x = 29,044,518,079.68/168,003.72
  6. Step 6: Final answer
    x = 172,880.21

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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.