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Finding the Fourth Proportional to 136,771.97, 188,519.36 and 91,433.39

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Solution

The fourth proportional to 136,771.97, 188,519.36 and 91,433.39 is: 126,027.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,771.97 : 188,519.36 = 91,433.39 : x
  2. Step 2: Convert to fraction form
    136,771.97/188,519.36 = 91,433.39/x
  3. Step 3: Cross multiply
    136,771.97x = 188,519.36 × 91,433.39
  4. Step 4: Simplify right side
    136,771.97x = 17,236,962,765.67
  5. Step 5: Solve for x
    x = 17,236,962,765.67/136,771.97
  6. Step 6: Final answer
    x = 126,027.02

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1.5x scale

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.