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Finding the Fourth Proportional to 13,796.22, 20,695.01 and 3,936.95

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Solution

The fourth proportional to 13,796.22, 20,695.01 and 3,936.95 is: 5,905.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,796.22 : 20,695.01 = 3,936.95 : x
  2. Step 2: Convert to fraction form
    13,796.22/20,695.01 = 3,936.95/x
  3. Step 3: Cross multiply
    13,796.22x = 20,695.01 × 3,936.95
  4. Step 4: Simplify right side
    13,796.22x = 81,475,219.62
  5. Step 5: Solve for x
    x = 81,475,219.62/13,796.22
  6. Step 6: Final answer
    x = 5,905.62

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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.