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Finding the Fourth Proportional to 73,910.13, 101,995.97 and 39,918.61

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Solution

The fourth proportional to 73,910.13, 101,995.97 and 39,918.61 is: 55,087.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,910.13 : 101,995.97 = 39,918.61 : x
  2. Step 2: Convert to fraction form
    73,910.13/101,995.97 = 39,918.61/x
  3. Step 3: Cross multiply
    73,910.13x = 101,995.97 × 39,918.61
  4. Step 4: Simplify right side
    73,910.13x = 4,071,537,348.00
  5. Step 5: Solve for x
    x = 4,071,537,348.00/73,910.13
  6. Step 6: Final answer
    x = 55,087.68

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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.