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Finding the Fourth Proportional to 103,272.39, 154,915.61 and 33,147.45

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Solution

The fourth proportional to 103,272.39, 154,915.61 and 33,147.45 is: 49,723.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,272.39 : 154,915.61 = 33,147.45 : x
  2. Step 2: Convert to fraction form
    103,272.39/154,915.61 = 33,147.45/x
  3. Step 3: Cross multiply
    103,272.39x = 154,915.61 × 33,147.45
  4. Step 4: Simplify right side
    103,272.39x = 5,135,057,270.96
  5. Step 5: Solve for x
    x = 5,135,057,270.96/103,272.39
  6. Step 6: Final answer
    x = 49,723.43

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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.