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Finding the Fourth Proportional to 108,957.11, 150,344.44 and 61,201.31

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Solution

The fourth proportional to 108,957.11, 150,344.44 and 61,201.31 is: 84,448.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,957.11 : 150,344.44 = 61,201.31 : x
  2. Step 2: Convert to fraction form
    108,957.11/150,344.44 = 61,201.31/x
  3. Step 3: Cross multiply
    108,957.11x = 150,344.44 × 61,201.31
  4. Step 4: Simplify right side
    108,957.11x = 9,201,275,774.49
  5. Step 5: Solve for x
    x = 9,201,275,774.49/108,957.11
  6. Step 6: Final answer
    x = 84,448.61

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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.