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Finding the Fourth Proportional to 58,388.87, 80,576.63 and 31,531.37

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Solution

The fourth proportional to 58,388.87, 80,576.63 and 31,531.37 is: 43,513.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,388.87 : 80,576.63 = 31,531.37 : x
  2. Step 2: Convert to fraction form
    58,388.87/80,576.63 = 31,531.37/x
  3. Step 3: Cross multiply
    58,388.87x = 80,576.63 × 31,531.37
  4. Step 4: Simplify right side
    58,388.87x = 2,540,691,934.03
  5. Step 5: Solve for x
    x = 2,540,691,934.03/58,388.87
  6. Step 6: Final answer
    x = 43,513.29

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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.