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Finding the Fourth Proportional to 17,940.11, 26,909.88 and 8,072.42

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Solution

The fourth proportional to 17,940.11, 26,909.88 and 8,072.42 is: 12,108.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,940.11 : 26,909.88 = 8,072.42 : x
  2. Step 2: Convert to fraction form
    17,940.11/26,909.88 = 8,072.42/x
  3. Step 3: Cross multiply
    17,940.11x = 26,909.88 × 8,072.42
  4. Step 4: Simplify right side
    17,940.11x = 217,227,718.96
  5. Step 5: Solve for x
    x = 217,227,718.96/17,940.11
  6. Step 6: Final answer
    x = 12,108.50

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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.