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Finding the Fourth Proportional to 190,230.96, 261,921.20 and 161,491.04

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Solution

The fourth proportional to 190,230.96, 261,921.20 and 161,491.04 is: 222,350.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,230.96 : 261,921.20 = 161,491.04 : x
  2. Step 2: Convert to fraction form
    190,230.96/261,921.20 = 161,491.04/x
  3. Step 3: Cross multiply
    190,230.96x = 261,921.20 × 161,491.04
  4. Step 4: Simplify right side
    190,230.96x = 42,297,926,986.05
  5. Step 5: Solve for x
    x = 42,297,926,986.05/190,230.96
  6. Step 6: Final answer
    x = 222,350.38

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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.