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Finding the Fourth Proportional to 57,181.76, 78,913.24 and 33,304.64

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Solution

The fourth proportional to 57,181.76, 78,913.24 and 33,304.64 is: 45,961.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,181.76 : 78,913.24 = 33,304.64 : x
  2. Step 2: Convert to fraction form
    57,181.76/78,913.24 = 33,304.64/x
  3. Step 3: Cross multiply
    57,181.76x = 78,913.24 × 33,304.64
  4. Step 4: Simplify right side
    57,181.76x = 2,628,177,049.43
  5. Step 5: Solve for x
    x = 2,628,177,049.43/57,181.76
  6. Step 6: Final answer
    x = 45,961.81

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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.