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Finding the Fourth Proportional to 135,265.70, 186,671.79 and 74,016.03

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Solution

The fourth proportional to 135,265.70, 186,671.79 and 74,016.03 is: 102,144.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,265.70 : 186,671.79 = 74,016.03 : x
  2. Step 2: Convert to fraction form
    135,265.70/186,671.79 = 74,016.03/x
  3. Step 3: Cross multiply
    135,265.70x = 186,671.79 × 74,016.03
  4. Step 4: Simplify right side
    135,265.70x = 13,816,704,458.78
  5. Step 5: Solve for x
    x = 13,816,704,458.78/135,265.70
  6. Step 6: Final answer
    x = 102,144.92

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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.