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Finding the Fourth Proportional to 214,880.75, 322,321.14 and 67,136.75

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Solution

The fourth proportional to 214,880.75, 322,321.14 and 67,136.75 is: 100,705.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,880.75 : 322,321.14 = 67,136.75 : x
  2. Step 2: Convert to fraction form
    214,880.75/322,321.14 = 67,136.75/x
  3. Step 3: Cross multiply
    214,880.75x = 322,321.14 × 67,136.75
  4. Step 4: Simplify right side
    214,880.75x = 21,639,593,795.90
  5. Step 5: Solve for x
    x = 21,639,593,795.90/214,880.75
  6. Step 6: Final answer
    x = 100,705.13

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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.