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Finding the Fourth Proportional to 169,992.41, 255,044.09 and 81,252.83

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Solution

The fourth proportional to 169,992.41, 255,044.09 and 81,252.83 is: 121,905.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,992.41 : 255,044.09 = 81,252.83 : x
  2. Step 2: Convert to fraction form
    169,992.41/255,044.09 = 81,252.83/x
  3. Step 3: Cross multiply
    169,992.41x = 255,044.09 × 81,252.83
  4. Step 4: Simplify right side
    169,992.41x = 20,723,054,087.27
  5. Step 5: Solve for x
    x = 20,723,054,087.27/169,992.41
  6. Step 6: Final answer
    x = 121,905.76

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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.