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Finding the Fourth Proportional to 73,424.43, 110,136.75 and 18,020.43

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Solution

The fourth proportional to 73,424.43, 110,136.75 and 18,020.43 is: 27,030.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,424.43 : 110,136.75 = 18,020.43 : x
  2. Step 2: Convert to fraction form
    73,424.43/110,136.75 = 18,020.43/x
  3. Step 3: Cross multiply
    73,424.43x = 110,136.75 × 18,020.43
  4. Step 4: Simplify right side
    73,424.43x = 1,984,711,593.80
  5. Step 5: Solve for x
    x = 1,984,711,593.80/73,424.43
  6. Step 6: Final answer
    x = 27,030.67

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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.