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Finding the Fourth Proportional to 18,757.44, 25,872.48 and 12,040.32

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Solution

The fourth proportional to 18,757.44, 25,872.48 and 12,040.32 is: 16,607.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,757.44 : 25,872.48 = 12,040.32 : x
  2. Step 2: Convert to fraction form
    18,757.44/25,872.48 = 12,040.32/x
  3. Step 3: Cross multiply
    18,757.44x = 25,872.48 × 12,040.32
  4. Step 4: Simplify right side
    18,757.44x = 311,512,938.39
  5. Step 5: Solve for x
    x = 311,512,938.39/18,757.44
  6. Step 6: Final answer
    x = 16,607.43

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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.