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Finding the Fourth Proportional to 31,692.96, 43,660.02 and 26,657.28

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Solution

The fourth proportional to 31,692.96, 43,660.02 and 26,657.28 is: 36,722.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,692.96 : 43,660.02 = 26,657.28 : x
  2. Step 2: Convert to fraction form
    31,692.96/43,660.02 = 26,657.28/x
  3. Step 3: Cross multiply
    31,692.96x = 43,660.02 × 26,657.28
  4. Step 4: Simplify right side
    31,692.96x = 1,163,857,377.95
  5. Step 5: Solve for x
    x = 1,163,857,377.95/31,692.96
  6. Step 6: Final answer
    x = 36,722.90

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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.