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Finding the Fourth Proportional to 351,843, 485,540.61 and 190,693.92

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Solution

The fourth proportional to 351,843, 485,540.61 and 190,693.92 is: 263,156.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,843 : 485,540.61 = 190,693.92 : x
  2. Step 2: Convert to fraction form
    351,843/485,540.61 = 190,693.92/x
  3. Step 3: Cross multiply
    351,843x = 485,540.61 × 190,693.92
  4. Step 4: Simplify right side
    351,843x = 92,589,642,240.09
  5. Step 5: Solve for x
    x = 92,589,642,240.09/351,843
  6. Step 6: Final answer
    x = 263,156.13

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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.