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Finding the Fourth Proportional to 137,274.60, 205,911.90 and 106,132.20

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Solution

The fourth proportional to 137,274.60, 205,911.90 and 106,132.20 is: 159,198.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,274.60 : 205,911.90 = 106,132.20 : x
  2. Step 2: Convert to fraction form
    137,274.60/205,911.90 = 106,132.20/x
  3. Step 3: Cross multiply
    137,274.60x = 205,911.90 × 106,132.20
  4. Step 4: Simplify right side
    137,274.60x = 21,853,882,953.18
  5. Step 5: Solve for x
    x = 21,853,882,953.18/137,274.60
  6. Step 6: Final answer
    x = 159,198.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.