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Finding the Fourth Proportional to 108,791.91, 150,143.64 and 73,056.33

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Solution

The fourth proportional to 108,791.91, 150,143.64 and 73,056.33 is: 100,824.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,791.91 : 150,143.64 = 73,056.33 : x
  2. Step 2: Convert to fraction form
    108,791.91/150,143.64 = 73,056.33/x
  3. Step 3: Cross multiply
    108,791.91x = 150,143.64 × 73,056.33
  4. Step 4: Simplify right side
    108,791.91x = 10,968,943,311.24
  5. Step 5: Solve for x
    x = 10,968,943,311.24/108,791.91
  6. Step 6: Final answer
    x = 100,824.99

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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.