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Finding the Fourth Proportional to 135,043.96, 186,344.46 and 74,610.88

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Solution

The fourth proportional to 135,043.96, 186,344.46 and 74,610.88 is: 102,954.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,043.96 : 186,344.46 = 74,610.88 : x
  2. Step 2: Convert to fraction form
    135,043.96/186,344.46 = 74,610.88/x
  3. Step 3: Cross multiply
    135,043.96x = 186,344.46 × 74,610.88
  4. Step 4: Simplify right side
    135,043.96x = 13,903,324,143.72
  5. Step 5: Solve for x
    x = 13,903,324,143.72/135,043.96
  6. Step 6: Final answer
    x = 102,954.06

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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.