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Finding the Fourth Proportional to 68,936.97, 103,434.91 and 33,424.55

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Solution

The fourth proportional to 68,936.97, 103,434.91 and 33,424.55 is: 50,151.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,936.97 : 103,434.91 = 33,424.55 : x
  2. Step 2: Convert to fraction form
    68,936.97/103,434.91 = 33,424.55/x
  3. Step 3: Cross multiply
    68,936.97x = 103,434.91 × 33,424.55
  4. Step 4: Simplify right side
    68,936.97x = 3,457,265,108.19
  5. Step 5: Solve for x
    x = 3,457,265,108.19/68,936.97
  6. Step 6: Final answer
    x = 50,151.10

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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.