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Finding the Fourth Proportional to 80,687.94, 111,354.92 and 44,881.28

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Solution

The fourth proportional to 80,687.94, 111,354.92 and 44,881.28 is: 61,939.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,687.94 : 111,354.92 = 44,881.28 : x
  2. Step 2: Convert to fraction form
    80,687.94/111,354.92 = 44,881.28/x
  3. Step 3: Cross multiply
    80,687.94x = 111,354.92 × 44,881.28
  4. Step 4: Simplify right side
    80,687.94x = 4,997,751,119.49
  5. Step 5: Solve for x
    x = 4,997,751,119.49/80,687.94
  6. Step 6: Final answer
    x = 61,939.26

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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.