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Finding the Fourth Proportional to 206,631, 309,998.52 and 58,887

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Solution

The fourth proportional to 206,631, 309,998.52 and 58,887 is: 88,345.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,631 : 309,998.52 = 58,887 : x
  2. Step 2: Convert to fraction form
    206,631/309,998.52 = 58,887/x
  3. Step 3: Cross multiply
    206,631x = 309,998.52 × 58,887
  4. Step 4: Simplify right side
    206,631x = 18,254,882,847.24
  5. Step 5: Solve for x
    x = 18,254,882,847.24/206,631
  6. Step 6: Final answer
    x = 88,345.32

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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.