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Finding the Fourth Proportional to 18,158.74, 27,231.06 and 7,063.96

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Solution

The fourth proportional to 18,158.74, 27,231.06 and 7,063.96 is: 10,593.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,158.74 : 27,231.06 = 7,063.96 : x
  2. Step 2: Convert to fraction form
    18,158.74/27,231.06 = 7,063.96/x
  3. Step 3: Cross multiply
    18,158.74x = 27,231.06 × 7,063.96
  4. Step 4: Simplify right side
    18,158.74x = 192,359,118.60
  5. Step 5: Solve for x
    x = 192,359,118.60/18,158.74
  6. Step 6: Final answer
    x = 10,593.20

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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.