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Finding the Fourth Proportional to 61,172.75, 91,783.62 and 27,908.48

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Solution

The fourth proportional to 61,172.75, 91,783.62 and 27,908.48 is: 41,873.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,172.75 : 91,783.62 = 27,908.48 : x
  2. Step 2: Convert to fraction form
    61,172.75/91,783.62 = 27,908.48/x
  3. Step 3: Cross multiply
    61,172.75x = 91,783.62 × 27,908.48
  4. Step 4: Simplify right side
    61,172.75x = 2,561,541,323.10
  5. Step 5: Solve for x
    x = 2,561,541,323.10/61,172.75
  6. Step 6: Final answer
    x = 41,873.90

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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.