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Finding the Fourth Proportional to 67,128.80, 100,692.77 and 22,786.79

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Solution

The fourth proportional to 67,128.80, 100,692.77 and 22,786.79 is: 34,180.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,128.80 : 100,692.77 = 22,786.79 : x
  2. Step 2: Convert to fraction form
    67,128.80/100,692.77 = 22,786.79/x
  3. Step 3: Cross multiply
    67,128.80x = 100,692.77 × 22,786.79
  4. Step 4: Simplify right side
    67,128.80x = 2,294,464,387.11
  5. Step 5: Solve for x
    x = 2,294,464,387.11/67,128.80
  6. Step 6: Final answer
    x = 34,180.03

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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.