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Finding the Fourth Proportional to 101,933.01, 140,644.89 and 61,645.91

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Solution

The fourth proportional to 101,933.01, 140,644.89 and 61,645.91 is: 85,057.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,933.01 : 140,644.89 = 61,645.91 : x
  2. Step 2: Convert to fraction form
    101,933.01/140,644.89 = 61,645.91/x
  3. Step 3: Cross multiply
    101,933.01x = 140,644.89 × 61,645.91
  4. Step 4: Simplify right side
    101,933.01x = 8,670,181,527.68
  5. Step 5: Solve for x
    x = 8,670,181,527.68/101,933.01
  6. Step 6: Final answer
    x = 85,057.64

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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.