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Finding the Fourth Proportional to 206,189.22, 309,333.03 and 73,081.11

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Solution

The fourth proportional to 206,189.22, 309,333.03 and 73,081.11 is: 109,639.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,189.22 : 309,333.03 = 73,081.11 : x
  2. Step 2: Convert to fraction form
    206,189.22/309,333.03 = 73,081.11/x
  3. Step 3: Cross multiply
    206,189.22x = 309,333.03 × 73,081.11
  4. Step 4: Simplify right side
    206,189.22x = 22,606,401,192.06
  5. Step 5: Solve for x
    x = 22,606,401,192.06/206,189.22
  6. Step 6: Final answer
    x = 109,639.10

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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.