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Finding the Fourth Proportional to 101,546.61, 140,090.21 and 61,237.97

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Solution

The fourth proportional to 101,546.61, 140,090.21 and 61,237.97 is: 84,481.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,546.61 : 140,090.21 = 61,237.97 : x
  2. Step 2: Convert to fraction form
    101,546.61/140,090.21 = 61,237.97/x
  3. Step 3: Cross multiply
    101,546.61x = 140,090.21 × 61,237.97
  4. Step 4: Simplify right side
    101,546.61x = 8,578,840,208.87
  5. Step 5: Solve for x
    x = 8,578,840,208.87/101,546.61
  6. Step 6: Final answer
    x = 84,481.80

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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.