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Finding the Fourth Proportional to 73,181.58, 109,747.77 and 28,796.70

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Solution

The fourth proportional to 73,181.58, 109,747.77 and 28,796.70 is: 43,185.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,181.58 : 109,747.77 = 28,796.70 : x
  2. Step 2: Convert to fraction form
    73,181.58/109,747.77 = 28,796.70/x
  3. Step 3: Cross multiply
    73,181.58x = 109,747.77 × 28,796.70
  4. Step 4: Simplify right side
    73,181.58x = 3,160,373,608.36
  5. Step 5: Solve for x
    x = 3,160,373,608.36/73,181.58
  6. Step 6: Final answer
    x = 43,185.37

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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.