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Finding the Fourth Proportional to 187,675.92, 280,807.59 and 131,625.43

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Solution

The fourth proportional to 187,675.92, 280,807.59 and 131,625.43 is: 196,942.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,675.92 : 280,807.59 = 131,625.43 : x
  2. Step 2: Convert to fraction form
    187,675.92/280,807.59 = 131,625.43/x
  3. Step 3: Cross multiply
    187,675.92x = 280,807.59 × 131,625.43
  4. Step 4: Simplify right side
    187,675.92x = 36,961,419,781.01
  5. Step 5: Solve for x
    x = 36,961,419,781.01/187,675.92
  6. Step 6: Final answer
    x = 196,942.79

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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.