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Finding the Fourth Proportional to 73,049.82, 100,808.79 and 39,515.82

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Solution

The fourth proportional to 73,049.82, 100,808.79 and 39,515.82 is: 54,531.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,049.82 : 100,808.79 = 39,515.82 : x
  2. Step 2: Convert to fraction form
    73,049.82/100,808.79 = 39,515.82/x
  3. Step 3: Cross multiply
    73,049.82x = 100,808.79 × 39,515.82
  4. Step 4: Simplify right side
    73,049.82x = 3,983,542,000.06
  5. Step 5: Solve for x
    x = 3,983,542,000.06/73,049.82
  6. Step 6: Final answer
    x = 54,531.85

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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.