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Finding the Fourth Proportional to 67,172.58, 100,736.28 and 33,871.38

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Solution

The fourth proportional to 67,172.58, 100,736.28 and 33,871.38 is: 50,795.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,172.58 : 100,736.28 = 33,871.38 : x
  2. Step 2: Convert to fraction form
    67,172.58/100,736.28 = 33,871.38/x
  3. Step 3: Cross multiply
    67,172.58x = 100,736.28 × 33,871.38
  4. Step 4: Simplify right side
    67,172.58x = 3,412,076,819.67
  5. Step 5: Solve for x
    x = 3,412,076,819.67/67,172.58
  6. Step 6: Final answer
    x = 50,795.68

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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.