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Finding the Fourth Proportional to 20,618.42, 30,927.56 and 7,467.73

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Solution

The fourth proportional to 20,618.42, 30,927.56 and 7,467.73 is: 11,201.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,618.42 : 30,927.56 = 7,467.73 : x
  2. Step 2: Convert to fraction form
    20,618.42/30,927.56 = 7,467.73/x
  3. Step 3: Cross multiply
    20,618.42x = 30,927.56 × 7,467.73
  4. Step 4: Simplify right side
    20,618.42x = 230,958,552.98
  5. Step 5: Solve for x
    x = 230,958,552.98/20,618.42
  6. Step 6: Final answer
    x = 11,201.57

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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.