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Finding the Fourth Proportional to 39,958.97, 55,141.80 and 22,965.98

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Solution

The fourth proportional to 39,958.97, 55,141.80 and 22,965.98 is: 31,692.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,958.97 : 55,141.80 = 22,965.98 : x
  2. Step 2: Convert to fraction form
    39,958.97/55,141.80 = 22,965.98/x
  3. Step 3: Cross multiply
    39,958.97x = 55,141.80 × 22,965.98
  4. Step 4: Simplify right side
    39,958.97x = 1,266,385,475.96
  5. Step 5: Solve for x
    x = 1,266,385,475.96/39,958.97
  6. Step 6: Final answer
    x = 31,692.15

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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.