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Finding the Fourth Proportional to 18,644.40, 25,724.88 and 11,093.22

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Solution

The fourth proportional to 18,644.40, 25,724.88 and 11,093.22 is: 15,306.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,644.40 : 25,724.88 = 11,093.22 : x
  2. Step 2: Convert to fraction form
    18,644.40/25,724.88 = 11,093.22/x
  3. Step 3: Cross multiply
    18,644.40x = 25,724.88 × 11,093.22
  4. Step 4: Simplify right side
    18,644.40x = 285,371,753.31
  5. Step 5: Solve for x
    x = 285,371,753.31/18,644.40
  6. Step 6: Final answer
    x = 15,306.03

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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.