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Finding the Fourth Proportional to 322,915.70, 483,221.55 and 204,643.70

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Solution

The fourth proportional to 322,915.70, 483,221.55 and 204,643.70 is: 306,235.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,915.70 : 483,221.55 = 204,643.70 : x
  2. Step 2: Convert to fraction form
    322,915.70/483,221.55 = 204,643.70/x
  3. Step 3: Cross multiply
    322,915.70x = 483,221.55 × 204,643.70
  4. Step 4: Simplify right side
    322,915.70x = 98,888,245,911.74
  5. Step 5: Solve for x
    x = 98,888,245,911.74/322,915.70
  6. Step 6: Final answer
    x = 306,235.48

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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.