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Finding the Fourth Proportional to 58,813.80, 81,162.90 and 31,956.41

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Solution

The fourth proportional to 58,813.80, 81,162.90 and 31,956.41 is: 44,099.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,813.80 : 81,162.90 = 31,956.41 : x
  2. Step 2: Convert to fraction form
    58,813.80/81,162.90 = 31,956.41/x
  3. Step 3: Cross multiply
    58,813.80x = 81,162.90 × 31,956.41
  4. Step 4: Simplify right side
    58,813.80x = 2,593,675,231.93
  5. Step 5: Solve for x
    x = 2,593,675,231.93/58,813.80
  6. Step 6: Final answer
    x = 44,099.78

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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.