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Finding the Fourth Proportional to 65,921.99, 98,918.99 and 27,965.40

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Solution

The fourth proportional to 65,921.99, 98,918.99 and 27,965.40 is: 41,963.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,921.99 : 98,918.99 = 27,965.40 : x
  2. Step 2: Convert to fraction form
    65,921.99/98,918.99 = 27,965.40/x
  3. Step 3: Cross multiply
    65,921.99x = 98,918.99 × 27,965.40
  4. Step 4: Simplify right side
    65,921.99x = 2,766,308,558.44
  5. Step 5: Solve for x
    x = 2,766,308,558.44/65,921.99
  6. Step 6: Final answer
    x = 41,963.37

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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.