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Finding the Fourth Proportional to 101,616.71, 140,231.06 and 55,676.54

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Solution

The fourth proportional to 101,616.71, 140,231.06 and 55,676.54 is: 76,833.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,616.71 : 140,231.06 = 55,676.54 : x
  2. Step 2: Convert to fraction form
    101,616.71/140,231.06 = 55,676.54/x
  3. Step 3: Cross multiply
    101,616.71x = 140,231.06 × 55,676.54
  4. Step 4: Simplify right side
    101,616.71x = 7,807,580,221.33
  5. Step 5: Solve for x
    x = 7,807,580,221.33/101,616.71
  6. Step 6: Final answer
    x = 76,833.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.