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Finding the Fourth Proportional to 206,493.44, 309,793.44 and 66,253.28

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Solution

The fourth proportional to 206,493.44, 309,793.44 and 66,253.28 is: 99,397.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,493.44 : 309,793.44 = 66,253.28 : x
  2. Step 2: Convert to fraction form
    206,493.44/309,793.44 = 66,253.28/x
  3. Step 3: Cross multiply
    206,493.44x = 309,793.44 × 66,253.28
  4. Step 4: Simplify right side
    206,493.44x = 20,524,831,522.48
  5. Step 5: Solve for x
    x = 20,524,831,522.48/206,493.44
  6. Step 6: Final answer
    x = 99,397.01

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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.