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Finding the Fourth Proportional to 172,791.32, 259,148.09 and 61,983.32

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Solution

The fourth proportional to 172,791.32, 259,148.09 and 61,983.32 is: 92,961.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,791.32 : 259,148.09 = 61,983.32 : x
  2. Step 2: Convert to fraction form
    172,791.32/259,148.09 = 61,983.32/x
  3. Step 3: Cross multiply
    172,791.32x = 259,148.09 × 61,983.32
  4. Step 4: Simplify right side
    172,791.32x = 16,062,857,849.08
  5. Step 5: Solve for x
    x = 16,062,857,849.08/172,791.32
  6. Step 6: Final answer
    x = 92,961.03

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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.