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Finding the Fourth Proportional to 13,863.78, 20,795.67 and 6,072.66

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Solution

The fourth proportional to 13,863.78, 20,795.67 and 6,072.66 is: 9,108.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,863.78 : 20,795.67 = 6,072.66 : x
  2. Step 2: Convert to fraction form
    13,863.78/20,795.67 = 6,072.66/x
  3. Step 3: Cross multiply
    13,863.78x = 20,795.67 × 6,072.66
  4. Step 4: Simplify right side
    13,863.78x = 126,285,033.38
  5. Step 5: Solve for x
    x = 126,285,033.38/13,863.78
  6. Step 6: Final answer
    x = 9,108.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.