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Finding the Fourth Proportional to 81,996.84, 122,936.94 and 39,253.32

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Solution

The fourth proportional to 81,996.84, 122,936.94 and 39,253.32 is: 58,852.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,996.84 : 122,936.94 = 39,253.32 : x
  2. Step 2: Convert to fraction form
    81,996.84/122,936.94 = 39,253.32/x
  3. Step 3: Cross multiply
    81,996.84x = 122,936.94 × 39,253.32
  4. Step 4: Simplify right side
    81,996.84x = 4,825,683,045.64
  5. Step 5: Solve for x
    x = 4,825,683,045.64/81,996.84
  6. Step 6: Final answer
    x = 58,852.06

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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.