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Finding the Fourth Proportional to 18,882.84, 26,034.24 and 11,806.68

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Solution

The fourth proportional to 18,882.84, 26,034.24 and 11,806.68 is: 16,278.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,882.84 : 26,034.24 = 11,806.68 : x
  2. Step 2: Convert to fraction form
    18,882.84/26,034.24 = 11,806.68/x
  3. Step 3: Cross multiply
    18,882.84x = 26,034.24 × 11,806.68
  4. Step 4: Simplify right side
    18,882.84x = 307,377,940.72
  5. Step 5: Solve for x
    x = 307,377,940.72/18,882.84
  6. Step 6: Final answer
    x = 16,278.16

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1.5x scale

Why These Related Problems?

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