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Finding the Fourth Proportional to 666,183.44, 998,915.33 and 345,540.45

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Solution

The fourth proportional to 666,183.44, 998,915.33 and 345,540.45 is: 518,124.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,183.44 : 998,915.33 = 345,540.45 : x
  2. Step 2: Convert to fraction form
    666,183.44/998,915.33 = 345,540.45/x
  3. Step 3: Cross multiply
    666,183.44x = 998,915.33 × 345,540.45
  4. Step 4: Simplify right side
    666,183.44x = 345,165,648,147.86
  5. Step 5: Solve for x
    x = 345,165,648,147.86/666,183.44
  6. Step 6: Final answer
    x = 518,124.03

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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.