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Finding the Fourth Proportional to 71,627.87, 98,845.75 and 39,796.09

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Solution

The fourth proportional to 71,627.87, 98,845.75 and 39,796.09 is: 54,918.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,627.87 : 98,845.75 = 39,796.09 : x
  2. Step 2: Convert to fraction form
    71,627.87/98,845.75 = 39,796.09/x
  3. Step 3: Cross multiply
    71,627.87x = 98,845.75 × 39,796.09
  4. Step 4: Simplify right side
    71,627.87x = 3,933,674,165.75
  5. Step 5: Solve for x
    x = 3,933,674,165.75/71,627.87
  6. Step 6: Final answer
    x = 54,918.20

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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.