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Finding the Fourth Proportional to 114,761.81, 158,361.20 and 63,771.30

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Solution

The fourth proportional to 114,761.81, 158,361.20 and 63,771.30 is: 87,998.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,761.81 : 158,361.20 = 63,771.30 : x
  2. Step 2: Convert to fraction form
    114,761.81/158,361.20 = 63,771.30/x
  3. Step 3: Cross multiply
    114,761.81x = 158,361.20 × 63,771.30
  4. Step 4: Simplify right side
    114,761.81x = 10,098,899,593.56
  5. Step 5: Solve for x
    x = 10,098,899,593.56/114,761.81
  6. Step 6: Final answer
    x = 87,998.78

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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.