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Finding the Fourth Proportional to 206,356.86, 309,622.86 and 112,753.26

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Solution

The fourth proportional to 206,356.86, 309,622.86 and 112,753.26 is: 169,177.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,356.86 : 309,622.86 = 112,753.26 : x
  2. Step 2: Convert to fraction form
    206,356.86/309,622.86 = 112,753.26/x
  3. Step 3: Cross multiply
    206,356.86x = 309,622.86 × 112,753.26
  4. Step 4: Simplify right side
    206,356.86x = 34,910,986,835.52
  5. Step 5: Solve for x
    x = 34,910,986,835.52/206,356.86
  6. Step 6: Final answer
    x = 169,177.74

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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.