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Finding the Fourth Proportional to 58,847.39, 81,208.44 and 31,990.57

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Solution

The fourth proportional to 58,847.39, 81,208.44 and 31,990.57 is: 44,146.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,847.39 : 81,208.44 = 31,990.57 : x
  2. Step 2: Convert to fraction form
    58,847.39/81,208.44 = 31,990.57/x
  3. Step 3: Cross multiply
    58,847.39x = 81,208.44 × 31,990.57
  4. Step 4: Simplify right side
    58,847.39x = 2,597,904,174.83
  5. Step 5: Solve for x
    x = 2,597,904,174.83/58,847.39
  6. Step 6: Final answer
    x = 44,146.47

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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.