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Finding the Fourth Proportional to 76,991.33, 115,692.03 and 41,479.92

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Solution

The fourth proportional to 76,991.33, 115,692.03 and 41,479.92 is: 62,330.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,991.33 : 115,692.03 = 41,479.92 : x
  2. Step 2: Convert to fraction form
    76,991.33/115,692.03 = 41,479.92/x
  3. Step 3: Cross multiply
    76,991.33x = 115,692.03 × 41,479.92
  4. Step 4: Simplify right side
    76,991.33x = 4,798,895,704.26
  5. Step 5: Solve for x
    x = 4,798,895,704.26/76,991.33
  6. Step 6: Final answer
    x = 62,330.34

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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.