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Finding the Fourth Proportional to 18,473.58, 27,722.50 and 6,786.90

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Solution

The fourth proportional to 18,473.58, 27,722.50 and 6,786.90 is: 10,184.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,473.58 : 27,722.50 = 6,786.90 : x
  2. Step 2: Convert to fraction form
    18,473.58/27,722.50 = 6,786.90/x
  3. Step 3: Cross multiply
    18,473.58x = 27,722.50 × 6,786.90
  4. Step 4: Simplify right side
    18,473.58x = 188,149,835.25
  5. Step 5: Solve for x
    x = 188,149,835.25/18,473.58
  6. Step 6: Final answer
    x = 10,184.81

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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.