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Finding the Fourth Proportional to 18,736.62, 28,102.20 and 6,256.62

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Solution

The fourth proportional to 18,736.62, 28,102.20 and 6,256.62 is: 9,384.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,736.62 : 28,102.20 = 6,256.62 : x
  2. Step 2: Convert to fraction form
    18,736.62/28,102.20 = 6,256.62/x
  3. Step 3: Cross multiply
    18,736.62x = 28,102.20 × 6,256.62
  4. Step 4: Simplify right side
    18,736.62x = 175,824,786.56
  5. Step 5: Solve for x
    x = 175,824,786.56/18,736.62
  6. Step 6: Final answer
    x = 9,384.02

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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.