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Finding the Fourth Proportional to 67,003.15, 100,503.46 and 27,021.30

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Solution

The fourth proportional to 67,003.15, 100,503.46 and 27,021.30 is: 40,531.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,003.15 : 100,503.46 = 27,021.30 : x
  2. Step 2: Convert to fraction form
    67,003.15/100,503.46 = 27,021.30/x
  3. Step 3: Cross multiply
    67,003.15x = 100,503.46 × 27,021.30
  4. Step 4: Simplify right side
    67,003.15x = 2,715,733,724.59
  5. Step 5: Solve for x
    x = 2,715,733,724.59/67,003.15
  6. Step 6: Final answer
    x = 40,531.43

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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.