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Finding the Fourth Proportional to 111,162.63, 166,721.77 and 40,083.31

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Solution

The fourth proportional to 111,162.63, 166,721.77 and 40,083.31 is: 60,116.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,162.63 : 166,721.77 = 40,083.31 : x
  2. Step 2: Convert to fraction form
    111,162.63/166,721.77 = 40,083.31/x
  3. Step 3: Cross multiply
    111,162.63x = 166,721.77 × 40,083.31
  4. Step 4: Simplify right side
    111,162.63x = 6,682,760,390.66
  5. Step 5: Solve for x
    x = 6,682,760,390.66/111,162.63
  6. Step 6: Final answer
    x = 60,116.97

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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.