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Finding the Fourth Proportional to 72,661.66, 108,991.31 and 35,224.94

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Solution

The fourth proportional to 72,661.66, 108,991.31 and 35,224.94 is: 52,836.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,661.66 : 108,991.31 = 35,224.94 : x
  2. Step 2: Convert to fraction form
    72,661.66/108,991.31 = 35,224.94/x
  3. Step 3: Cross multiply
    72,661.66x = 108,991.31 × 35,224.94
  4. Step 4: Simplify right side
    72,661.66x = 3,839,212,451.62
  5. Step 5: Solve for x
    x = 3,839,212,451.62/72,661.66
  6. Step 6: Final answer
    x = 52,836.84

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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.