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Finding the Fourth Proportional to 22,199.76, 30,636.60 and 12,768.33

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Solution

The fourth proportional to 22,199.76, 30,636.60 and 12,768.33 is: 17,620.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,199.76 : 30,636.60 = 12,768.33 : x
  2. Step 2: Convert to fraction form
    22,199.76/30,636.60 = 12,768.33/x
  3. Step 3: Cross multiply
    22,199.76x = 30,636.60 × 12,768.33
  4. Step 4: Simplify right side
    22,199.76x = 391,178,218.88
  5. Step 5: Solve for x
    x = 391,178,218.88/22,199.76
  6. Step 6: Final answer
    x = 17,620.83

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.