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Finding the Fourth Proportional to 322,611.12, 483,915.60 and 82,724.76

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Solution

The fourth proportional to 322,611.12, 483,915.60 and 82,724.76 is: 124,086.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,611.12 : 483,915.60 = 82,724.76 : x
  2. Step 2: Convert to fraction form
    322,611.12/483,915.60 = 82,724.76/x
  3. Step 3: Cross multiply
    322,611.12x = 483,915.60 × 82,724.76
  4. Step 4: Simplify right side
    322,611.12x = 40,031,801,870.26
  5. Step 5: Solve for x
    x = 40,031,801,870.26/322,611.12
  6. Step 6: Final answer
    x = 124,086.86

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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.