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Finding the Fourth Proportional to 22,418.65, 33,620.10 and 6,619.46

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Solution

The fourth proportional to 22,418.65, 33,620.10 and 6,619.46 is: 9,926.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,418.65 : 33,620.10 = 6,619.46 : x
  2. Step 2: Convert to fraction form
    22,418.65/33,620.10 = 6,619.46/x
  3. Step 3: Cross multiply
    22,418.65x = 33,620.10 × 6,619.46
  4. Step 4: Simplify right side
    22,418.65x = 222,546,907.15
  5. Step 5: Solve for x
    x = 222,546,907.15/22,418.65
  6. Step 6: Final answer
    x = 9,926.86

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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.