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Finding the Fourth Proportional to 61,107.80, 84,327.36 and 35,612.54

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Solution

The fourth proportional to 61,107.80, 84,327.36 and 35,612.54 is: 49,144.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,107.80 : 84,327.36 = 35,612.54 : x
  2. Step 2: Convert to fraction form
    61,107.80/84,327.36 = 35,612.54/x
  3. Step 3: Cross multiply
    61,107.80x = 84,327.36 × 35,612.54
  4. Step 4: Simplify right side
    61,107.80x = 3,003,111,481.09
  5. Step 5: Solve for x
    x = 3,003,111,481.09/61,107.80
  6. Step 6: Final answer
    x = 49,144.49

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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.