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Finding the Fourth Proportional to 101,991.89, 140,708.48 and 58,963.46

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Solution

The fourth proportional to 101,991.89, 140,708.48 and 58,963.46 is: 81,346.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,991.89 : 140,708.48 = 58,963.46 : x
  2. Step 2: Convert to fraction form
    101,991.89/140,708.48 = 58,963.46/x
  3. Step 3: Cross multiply
    101,991.89x = 140,708.48 × 58,963.46
  4. Step 4: Simplify right side
    101,991.89x = 8,296,658,627.78
  5. Step 5: Solve for x
    x = 8,296,658,627.78/101,991.89
  6. Step 6: Final answer
    x = 81,346.26

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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.