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Finding the Fourth Proportional to 18,869.92, 26,040.25 and 10,911.97

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Solution

The fourth proportional to 18,869.92, 26,040.25 and 10,911.97 is: 15,058.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,869.92 : 26,040.25 = 10,911.97 : x
  2. Step 2: Convert to fraction form
    18,869.92/26,040.25 = 10,911.97/x
  3. Step 3: Cross multiply
    18,869.92x = 26,040.25 × 10,911.97
  4. Step 4: Simplify right side
    18,869.92x = 284,150,426.79
  5. Step 5: Solve for x
    x = 284,150,426.79/18,869.92
  6. Step 6: Final answer
    x = 15,058.38

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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.