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Finding the Fourth Proportional to 18,531.28, 27,796.97 and 5,383.97

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Solution

The fourth proportional to 18,531.28, 27,796.97 and 5,383.97 is: 8,075.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,531.28 : 27,796.97 = 5,383.97 : x
  2. Step 2: Convert to fraction form
    18,531.28/27,796.97 = 5,383.97/x
  3. Step 3: Cross multiply
    18,531.28x = 27,796.97 × 5,383.97
  4. Step 4: Simplify right side
    18,531.28x = 149,658,031.28
  5. Step 5: Solve for x
    x = 149,658,031.28/18,531.28
  6. Step 6: Final answer
    x = 8,075.97

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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.