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Finding the Fourth Proportional to 18,562.56, 27,844.78 and 5,415.92

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Solution

The fourth proportional to 18,562.56, 27,844.78 and 5,415.92 is: 8,124.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,562.56 : 27,844.78 = 5,415.92 : x
  2. Step 2: Convert to fraction form
    18,562.56/27,844.78 = 5,415.92/x
  3. Step 3: Cross multiply
    18,562.56x = 27,844.78 × 5,415.92
  4. Step 4: Simplify right side
    18,562.56x = 150,805,100.90
  5. Step 5: Solve for x
    x = 150,805,100.90/18,562.56
  6. Step 6: Final answer
    x = 8,124.15

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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.