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Finding the Fourth Proportional to 83,660.39, 125,443.43 and 27,485.42

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Solution

The fourth proportional to 83,660.39, 125,443.43 and 27,485.42 is: 41,212.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,660.39 : 125,443.43 = 27,485.42 : x
  2. Step 2: Convert to fraction form
    83,660.39/125,443.43 = 27,485.42/x
  3. Step 3: Cross multiply
    83,660.39x = 125,443.43 × 27,485.42
  4. Step 4: Simplify right side
    83,660.39x = 3,447,864,595.15
  5. Step 5: Solve for x
    x = 3,447,864,595.15/83,660.39
  6. Step 6: Final answer
    x = 41,212.63

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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.