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Finding the Fourth Proportional to 90,604.15, 135,905.55 and 27,424.15

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Solution

The fourth proportional to 90,604.15, 135,905.55 and 27,424.15 is: 41,136.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,604.15 : 135,905.55 = 27,424.15 : x
  2. Step 2: Convert to fraction form
    90,604.15/135,905.55 = 27,424.15/x
  3. Step 3: Cross multiply
    90,604.15x = 135,905.55 × 27,424.15
  4. Step 4: Simplify right side
    90,604.15x = 3,727,094,189.03
  5. Step 5: Solve for x
    x = 3,727,094,189.03/90,604.15
  6. Step 6: Final answer
    x = 41,136.02

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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.