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Finding the Fourth Proportional to 18,793.62, 25,937.82 and 11,722.32

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Solution

The fourth proportional to 18,793.62, 25,937.82 and 11,722.32 is: 16,178.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,793.62 : 25,937.82 = 11,722.32 : x
  2. Step 2: Convert to fraction form
    18,793.62/25,937.82 = 11,722.32/x
  3. Step 3: Cross multiply
    18,793.62x = 25,937.82 × 11,722.32
  4. Step 4: Simplify right side
    18,793.62x = 304,051,426.14
  5. Step 5: Solve for x
    x = 304,051,426.14/18,793.62
  6. Step 6: Final answer
    x = 16,178.44

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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.