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Finding the Fourth Proportional to 351,997.26, 485,753.27 and 199,065.48

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Solution

The fourth proportional to 351,997.26, 485,753.27 and 199,065.48 is: 274,708.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,997.26 : 485,753.27 = 199,065.48 : x
  2. Step 2: Convert to fraction form
    351,997.26/485,753.27 = 199,065.48/x
  3. Step 3: Cross multiply
    351,997.26x = 485,753.27 × 199,065.48
  4. Step 4: Simplify right side
    351,997.26x = 96,696,706,858.79
  5. Step 5: Solve for x
    x = 96,696,706,858.79/351,997.26
  6. Step 6: Final answer
    x = 274,708.69

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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.