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Finding the Fourth Proportional to 72,467.70, 108,551.97 and 53,768.94

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Solution

The fourth proportional to 72,467.70, 108,551.97 and 53,768.94 is: 80,542.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,467.70 : 108,551.97 = 53,768.94 : x
  2. Step 2: Convert to fraction form
    72,467.70/108,551.97 = 53,768.94/x
  3. Step 3: Cross multiply
    72,467.70x = 108,551.97 × 53,768.94
  4. Step 4: Simplify right side
    72,467.70x = 5,836,724,361.81
  5. Step 5: Solve for x
    x = 5,836,724,361.81/72,467.70
  6. Step 6: Final answer
    x = 80,542.43

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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.