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Finding the Fourth Proportional to 18,466.56, 27,724.37 and 8,612.73

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Solution

The fourth proportional to 18,466.56, 27,724.37 and 8,612.73 is: 12,930.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,466.56 : 27,724.37 = 8,612.73 : x
  2. Step 2: Convert to fraction form
    18,466.56/27,724.37 = 8,612.73/x
  3. Step 3: Cross multiply
    18,466.56x = 27,724.37 × 8,612.73
  4. Step 4: Simplify right side
    18,466.56x = 238,782,470.17
  5. Step 5: Solve for x
    x = 238,782,470.17/18,466.56
  6. Step 6: Final answer
    x = 12,930.53

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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.