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Finding the Fourth Proportional to 206,670.75, 309,717.45 and 111,696.21

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Solution

The fourth proportional to 206,670.75, 309,717.45 and 111,696.21 is: 167,388.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,670.75 : 309,717.45 = 111,696.21 : x
  2. Step 2: Convert to fraction form
    206,670.75/309,717.45 = 111,696.21/x
  3. Step 3: Cross multiply
    206,670.75x = 309,717.45 × 111,696.21
  4. Step 4: Simplify right side
    206,670.75x = 34,594,265,335.86
  5. Step 5: Solve for x
    x = 34,594,265,335.86/206,670.75
  6. Step 6: Final answer
    x = 167,388.30

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1.5x scale

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.