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Finding the Fourth Proportional to 13,797.32, 20,695.51 and 3,936.60

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Solution

The fourth proportional to 13,797.32, 20,695.51 and 3,936.60 is: 5,904.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,797.32 : 20,695.51 = 3,936.60 : x
  2. Step 2: Convert to fraction form
    13,797.32/20,695.51 = 3,936.60/x
  3. Step 3: Cross multiply
    13,797.32x = 20,695.51 × 3,936.60
  4. Step 4: Simplify right side
    13,797.32x = 81,469,955.12
  5. Step 5: Solve for x
    x = 81,469,955.12/13,797.32
  6. Step 6: Final answer
    x = 5,904.77

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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.