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Finding the Fourth Proportional to 351,576.90, 485,176.26 and 190,431.44

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Solution

The fourth proportional to 351,576.90, 485,176.26 and 190,431.44 is: 262,795.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,576.90 : 485,176.26 = 190,431.44 : x
  2. Step 2: Convert to fraction form
    351,576.90/485,176.26 = 190,431.44/x
  3. Step 3: Cross multiply
    351,576.90x = 485,176.26 × 190,431.44
  4. Step 4: Simplify right side
    351,576.90x = 92,392,813,845.61
  5. Step 5: Solve for x
    x = 92,392,813,845.61/351,576.90
  6. Step 6: Final answer
    x = 262,795.46

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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.