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Finding the Fourth Proportional to 108,671.63, 149,958.14 and 60,918.48

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Solution

The fourth proportional to 108,671.63, 149,958.14 and 60,918.48 is: 84,062.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,671.63 : 149,958.14 = 60,918.48 : x
  2. Step 2: Convert to fraction form
    108,671.63/149,958.14 = 60,918.48/x
  3. Step 3: Cross multiply
    108,671.63x = 149,958.14 × 60,918.48
  4. Step 4: Simplify right side
    108,671.63x = 9,135,221,647.83
  5. Step 5: Solve for x
    x = 9,135,221,647.83/108,671.63
  6. Step 6: Final answer
    x = 84,062.62

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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.