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Finding the Fourth Proportional to 73,311, 101,169.72 and 39,777

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Solution

The fourth proportional to 73,311, 101,169.72 and 39,777 is: 54,892.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,311 : 101,169.72 = 39,777 : x
  2. Step 2: Convert to fraction form
    73,311/101,169.72 = 39,777/x
  3. Step 3: Cross multiply
    73,311x = 101,169.72 × 39,777
  4. Step 4: Simplify right side
    73,311x = 4,024,227,952.44
  5. Step 5: Solve for x
    x = 4,024,227,952.44/73,311
  6. Step 6: Final answer
    x = 54,892.55

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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.