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Finding the Fourth Proportional to 18,814.80, 28,144.44 and 17,104.08

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Solution

The fourth proportional to 18,814.80, 28,144.44 and 17,104.08 is: 25,585.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,814.80 : 28,144.44 = 17,104.08 : x
  2. Step 2: Convert to fraction form
    18,814.80/28,144.44 = 17,104.08/x
  3. Step 3: Cross multiply
    18,814.80x = 28,144.44 × 17,104.08
  4. Step 4: Simplify right side
    18,814.80x = 481,384,753.32
  5. Step 5: Solve for x
    x = 481,384,753.32/18,814.80
  6. Step 6: Final answer
    x = 25,585.43

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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.