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Finding the Fourth Proportional to 22,338.16, 30,806.09 and 15,178.81

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Solution

The fourth proportional to 22,338.16, 30,806.09 and 15,178.81 is: 20,932.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,338.16 : 30,806.09 = 15,178.81 : x
  2. Step 2: Convert to fraction form
    22,338.16/30,806.09 = 15,178.81/x
  3. Step 3: Cross multiply
    22,338.16x = 30,806.09 × 15,178.81
  4. Step 4: Simplify right side
    22,338.16x = 467,599,834.11
  5. Step 5: Solve for x
    x = 467,599,834.11/22,338.16
  6. Step 6: Final answer
    x = 20,932.78

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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.