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Finding the Fourth Proportional to 108,957.01, 150,352.59 and 61,218.31

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Solution

The fourth proportional to 108,957.01, 150,352.59 and 61,218.31 is: 84,476.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,957.01 : 150,352.59 = 61,218.31 : x
  2. Step 2: Convert to fraction form
    108,957.01/150,352.59 = 61,218.31/x
  3. Step 3: Cross multiply
    108,957.01x = 150,352.59 × 61,218.31
  4. Step 4: Simplify right side
    108,957.01x = 9,204,331,463.92
  5. Step 5: Solve for x
    x = 9,204,331,463.92/108,957.01
  6. Step 6: Final answer
    x = 84,476.73

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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.