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Finding the Fourth Proportional to 220,880.40, 331,320.60 and 73,136.40

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Solution

The fourth proportional to 220,880.40, 331,320.60 and 73,136.40 is: 109,704.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,880.40 : 331,320.60 = 73,136.40 : x
  2. Step 2: Convert to fraction form
    220,880.40/331,320.60 = 73,136.40/x
  3. Step 3: Cross multiply
    220,880.40x = 331,320.60 × 73,136.40
  4. Step 4: Simplify right side
    220,880.40x = 24,231,595,929.84
  5. Step 5: Solve for x
    x = 24,231,595,929.84/220,880.40
  6. Step 6: Final answer
    x = 109,704.60

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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.