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Finding the Fourth Proportional to 483,658.02, 725,503.20 and 217,419.30

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Solution

The fourth proportional to 483,658.02, 725,503.20 and 217,419.30 is: 326,136.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,658.02 : 725,503.20 = 217,419.30 : x
  2. Step 2: Convert to fraction form
    483,658.02/725,503.20 = 217,419.30/x
  3. Step 3: Cross multiply
    483,658.02x = 725,503.20 × 217,419.30
  4. Step 4: Simplify right side
    483,658.02x = 157,738,397,891.76
  5. Step 5: Solve for x
    x = 157,738,397,891.76/483,658.02
  6. Step 6: Final answer
    x = 326,136.22

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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.