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Finding the Fourth Proportional to 68,015.70, 101,996.21 and 25,881.32

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Solution

The fourth proportional to 68,015.70, 101,996.21 and 25,881.32 is: 38,811.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,015.70 : 101,996.21 = 25,881.32 : x
  2. Step 2: Convert to fraction form
    68,015.70/101,996.21 = 25,881.32/x
  3. Step 3: Cross multiply
    68,015.70x = 101,996.21 × 25,881.32
  4. Step 4: Simplify right side
    68,015.70x = 2,639,796,869.49
  5. Step 5: Solve for x
    x = 2,639,796,869.49/68,015.70
  6. Step 6: Final answer
    x = 38,811.58

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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.