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Finding the Fourth Proportional to 26,805.17, 40,220.86 and 18,958.11

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Solution

The fourth proportional to 26,805.17, 40,220.86 and 18,958.11 is: 28,446.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,805.17 : 40,220.86 = 18,958.11 : x
  2. Step 2: Convert to fraction form
    26,805.17/40,220.86 = 18,958.11/x
  3. Step 3: Cross multiply
    26,805.17x = 40,220.86 × 18,958.11
  4. Step 4: Simplify right side
    26,805.17x = 762,511,393.38
  5. Step 5: Solve for x
    x = 762,511,393.38/26,805.17
  6. Step 6: Final answer
    x = 28,446.43

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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.