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Finding the Fourth Proportional to 206,563.56, 284,992.74 and 115,906.20

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Solution

The fourth proportional to 206,563.56, 284,992.74 and 115,906.20 is: 159,914.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,563.56 : 284,992.74 = 115,906.20 : x
  2. Step 2: Convert to fraction form
    206,563.56/284,992.74 = 115,906.20/x
  3. Step 3: Cross multiply
    206,563.56x = 284,992.74 × 115,906.20
  4. Step 4: Simplify right side
    206,563.56x = 33,032,425,520.99
  5. Step 5: Solve for x
    x = 33,032,425,520.99/206,563.56
  6. Step 6: Final answer
    x = 159,914.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.