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Finding the Fourth Proportional to 108,433.68, 149,637.12 and 60,687.42

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Solution

The fourth proportional to 108,433.68, 149,637.12 and 60,687.42 is: 83,747.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,433.68 : 149,637.12 = 60,687.42 : x
  2. Step 2: Convert to fraction form
    108,433.68/149,637.12 = 60,687.42/x
  3. Step 3: Cross multiply
    108,433.68x = 149,637.12 × 60,687.42
  4. Step 4: Simplify right side
    108,433.68x = 9,081,090,749.03
  5. Step 5: Solve for x
    x = 9,081,090,749.03/108,433.68
  6. Step 6: Final answer
    x = 83,747.88

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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.