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Finding the Fourth Proportional to 58,770.68, 81,103.28 and 31,912.97

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Solution

The fourth proportional to 58,770.68, 81,103.28 and 31,912.97 is: 44,039.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,770.68 : 81,103.28 = 31,912.97 : x
  2. Step 2: Convert to fraction form
    58,770.68/81,103.28 = 31,912.97/x
  3. Step 3: Cross multiply
    58,770.68x = 81,103.28 × 31,912.97
  4. Step 4: Simplify right side
    58,770.68x = 2,588,245,976.46
  5. Step 5: Solve for x
    x = 2,588,245,976.46/58,770.68
  6. Step 6: Final answer
    x = 44,039.75

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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.