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Finding the Fourth Proportional to 173,231.40, 259,847.10 and 84,657.90

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Solution

The fourth proportional to 173,231.40, 259,847.10 and 84,657.90 is: 126,986.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,231.40 : 259,847.10 = 84,657.90 : x
  2. Step 2: Convert to fraction form
    173,231.40/259,847.10 = 84,657.90/x
  3. Step 3: Cross multiply
    173,231.40x = 259,847.10 × 84,657.90
  4. Step 4: Simplify right side
    173,231.40x = 21,998,109,807.09
  5. Step 5: Solve for x
    x = 21,998,109,807.09/173,231.40
  6. Step 6: Final answer
    x = 126,986.85

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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.