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Finding the Fourth Proportional to 83,857.80, 125,786.70 and 37,086.60

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Solution

The fourth proportional to 83,857.80, 125,786.70 and 37,086.60 is: 55,629.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,857.80 : 125,786.70 = 37,086.60 : x
  2. Step 2: Convert to fraction form
    83,857.80/125,786.70 = 37,086.60/x
  3. Step 3: Cross multiply
    83,857.80x = 125,786.70 × 37,086.60
  4. Step 4: Simplify right side
    83,857.80x = 4,665,001,028.22
  5. Step 5: Solve for x
    x = 4,665,001,028.22/83,857.80
  6. Step 6: Final answer
    x = 55,629.90

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1.5x scale

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.