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Finding the Fourth Proportional to 61,181.87, 91,809.14 and 33,101.31

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Solution

The fourth proportional to 61,181.87, 91,809.14 and 33,101.31 is: 49,671.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,181.87 : 91,809.14 = 33,101.31 : x
  2. Step 2: Convert to fraction form
    61,181.87/91,809.14 = 33,101.31/x
  3. Step 3: Cross multiply
    61,181.87x = 91,809.14 × 33,101.31
  4. Step 4: Simplify right side
    61,181.87x = 3,039,002,489.93
  5. Step 5: Solve for x
    x = 3,039,002,489.93/61,181.87
  6. Step 6: Final answer
    x = 49,671.62

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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.