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Finding the Fourth Proportional to 58,796.14, 81,138.93 and 31,939.10

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Solution

The fourth proportional to 58,796.14, 81,138.93 and 31,939.10 is: 44,076.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,796.14 : 81,138.93 = 31,939.10 : x
  2. Step 2: Convert to fraction form
    58,796.14/81,138.93 = 31,939.10/x
  3. Step 3: Cross multiply
    58,796.14x = 81,138.93 × 31,939.10
  4. Step 4: Simplify right side
    58,796.14x = 2,591,504,399.16
  5. Step 5: Solve for x
    x = 2,591,504,399.16/58,796.14
  6. Step 6: Final answer
    x = 44,076.10

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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.