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Finding the Fourth Proportional to 83,164.62, 124,672.97 and 30,561.81

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Solution

The fourth proportional to 83,164.62, 124,672.97 and 30,561.81 is: 45,815.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,164.62 : 124,672.97 = 30,561.81 : x
  2. Step 2: Convert to fraction form
    83,164.62/124,672.97 = 30,561.81/x
  3. Step 3: Cross multiply
    83,164.62x = 124,672.97 × 30,561.81
  4. Step 4: Simplify right side
    83,164.62x = 3,810,231,230.16
  5. Step 5: Solve for x
    x = 3,810,231,230.16/83,164.62
  6. Step 6: Final answer
    x = 45,815.53

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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.