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Finding the Fourth Proportional to 18,365.58, 27,548.55 and 7,274.97

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Solution

The fourth proportional to 18,365.58, 27,548.55 and 7,274.97 is: 10,912.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,365.58 : 27,548.55 = 7,274.97 : x
  2. Step 2: Convert to fraction form
    18,365.58/27,548.55 = 7,274.97/x
  3. Step 3: Cross multiply
    18,365.58x = 27,548.55 × 7,274.97
  4. Step 4: Simplify right side
    18,365.58x = 200,414,874.79
  5. Step 5: Solve for x
    x = 200,414,874.79/18,365.58
  6. Step 6: Final answer
    x = 10,912.53

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1.5x scale

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.