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Finding the Fourth Proportional to 206,366.69, 309,518.10 and 84,799.55

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Solution

The fourth proportional to 206,366.69, 309,518.10 and 84,799.55 is: 127,186.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,366.69 : 309,518.10 = 84,799.55 : x
  2. Step 2: Convert to fraction form
    206,366.69/309,518.10 = 84,799.55/x
  3. Step 3: Cross multiply
    206,366.69x = 309,518.10 × 84,799.55
  4. Step 4: Simplify right side
    206,366.69x = 26,246,994,049.26
  5. Step 5: Solve for x
    x = 26,246,994,049.26/206,366.69
  6. Step 6: Final answer
    x = 127,186.20

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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.