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Finding the Fourth Proportional to 171,983.73, 257,880.87 and 92,115.30

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Solution

The fourth proportional to 171,983.73, 257,880.87 and 92,115.30 is: 138,122.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,983.73 : 257,880.87 = 92,115.30 : x
  2. Step 2: Convert to fraction form
    171,983.73/257,880.87 = 92,115.30/x
  3. Step 3: Cross multiply
    171,983.73x = 257,880.87 × 92,115.30
  4. Step 4: Simplify right side
    171,983.73x = 23,754,773,704.31
  5. Step 5: Solve for x
    x = 23,754,773,704.31/171,983.73
  6. Step 6: Final answer
    x = 138,122.21

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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.