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Finding the Fourth Proportional to 81,181.73, 111,958.22 and 50,969.88

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Solution

The fourth proportional to 81,181.73, 111,958.22 and 50,969.88 is: 70,292.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,181.73 : 111,958.22 = 50,969.88 : x
  2. Step 2: Convert to fraction form
    81,181.73/111,958.22 = 50,969.88/x
  3. Step 3: Cross multiply
    81,181.73x = 111,958.22 × 50,969.88
  4. Step 4: Simplify right side
    81,181.73x = 5,706,497,165.84
  5. Step 5: Solve for x
    x = 5,706,497,165.84/81,181.73
  6. Step 6: Final answer
    x = 70,292.87

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1.5x scale

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.