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Finding the Fourth Proportional to 58,736.48, 81,057.14 and 31,879.32

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Solution

The fourth proportional to 58,736.48, 81,057.14 and 31,879.32 is: 43,993.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,736.48 : 81,057.14 = 31,879.32 : x
  2. Step 2: Convert to fraction form
    58,736.48/81,057.14 = 31,879.32/x
  3. Step 3: Cross multiply
    58,736.48x = 81,057.14 × 31,879.32
  4. Step 4: Simplify right side
    58,736.48x = 2,584,046,504.34
  5. Step 5: Solve for x
    x = 2,584,046,504.34/58,736.48
  6. Step 6: Final answer
    x = 43,993.89

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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.