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Finding the Fourth Proportional to 18,855.72, 26,025.57 and 10,896.80

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Solution

The fourth proportional to 18,855.72, 26,025.57 and 10,896.80 is: 15,040.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,855.72 : 26,025.57 = 10,896.80 : x
  2. Step 2: Convert to fraction form
    18,855.72/26,025.57 = 10,896.80/x
  3. Step 3: Cross multiply
    18,855.72x = 26,025.57 × 10,896.80
  4. Step 4: Simplify right side
    18,855.72x = 283,595,301.05
  5. Step 5: Solve for x
    x = 283,595,301.05/18,855.72
  6. Step 6: Final answer
    x = 15,040.28

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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.