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Finding the Fourth Proportional to 18,919.24, 26,107.94 and 11,262.48

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Solution

The fourth proportional to 18,919.24, 26,107.94 and 11,262.48 is: 15,541.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,919.24 : 26,107.94 = 11,262.48 : x
  2. Step 2: Convert to fraction form
    18,919.24/26,107.94 = 11,262.48/x
  3. Step 3: Cross multiply
    18,919.24x = 26,107.94 × 11,262.48
  4. Step 4: Simplify right side
    18,919.24x = 294,040,095.78
  5. Step 5: Solve for x
    x = 294,040,095.78/18,919.24
  6. Step 6: Final answer
    x = 15,541.86

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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.