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Finding the Fourth Proportional to 58,845.87, 81,205.06 and 31,987.82

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Solution

The fourth proportional to 58,845.87, 81,205.06 and 31,987.82 is: 44,141.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,845.87 : 81,205.06 = 31,987.82 : x
  2. Step 2: Convert to fraction form
    58,845.87/81,205.06 = 31,987.82/x
  3. Step 3: Cross multiply
    58,845.87x = 81,205.06 × 31,987.82
  4. Step 4: Simplify right side
    58,845.87x = 2,597,572,842.37
  5. Step 5: Solve for x
    x = 2,597,572,842.37/58,845.87
  6. Step 6: Final answer
    x = 44,141.97

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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.