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Finding the Fourth Proportional to 51,194.80, 76,792.20 and 27,809.20

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Solution

The fourth proportional to 51,194.80, 76,792.20 and 27,809.20 is: 41,713.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,194.80 : 76,792.20 = 27,809.20 : x
  2. Step 2: Convert to fraction form
    51,194.80/76,792.20 = 27,809.20/x
  3. Step 3: Cross multiply
    51,194.80x = 76,792.20 × 27,809.20
  4. Step 4: Simplify right side
    51,194.80x = 2,135,529,648.24
  5. Step 5: Solve for x
    x = 2,135,529,648.24/51,194.80
  6. Step 6: Final answer
    x = 41,713.80

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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.