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Finding the Fourth Proportional to 70,791.37, 97,692.38 and 38,961.41

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Solution

The fourth proportional to 70,791.37, 97,692.38 and 38,961.41 is: 53,766.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,791.37 : 97,692.38 = 38,961.41 : x
  2. Step 2: Convert to fraction form
    70,791.37/97,692.38 = 38,961.41/x
  3. Step 3: Cross multiply
    70,791.37x = 97,692.38 × 38,961.41
  4. Step 4: Simplify right side
    70,791.37x = 3,806,232,333.89
  5. Step 5: Solve for x
    x = 3,806,232,333.89/70,791.37
  6. Step 6: Final answer
    x = 53,766.90

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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.