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Finding the Fourth Proportional to 171,879.94, 257,921.98 and 92,992.42

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Solution

The fourth proportional to 171,879.94, 257,921.98 and 92,992.42 is: 139,543.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,879.94 : 257,921.98 = 92,992.42 : x
  2. Step 2: Convert to fraction form
    171,879.94/257,921.98 = 92,992.42/x
  3. Step 3: Cross multiply
    171,879.94x = 257,921.98 × 92,992.42
  4. Step 4: Simplify right side
    171,879.94x = 23,984,789,091.39
  5. Step 5: Solve for x
    x = 23,984,789,091.39/171,879.94
  6. Step 6: Final answer
    x = 139,543.85

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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.