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Finding the Fourth Proportional to 206,073.60, 309,110.40 and 65,836.80

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Solution

The fourth proportional to 206,073.60, 309,110.40 and 65,836.80 is: 98,755.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,073.60 : 309,110.40 = 65,836.80 : x
  2. Step 2: Convert to fraction form
    206,073.60/309,110.40 = 65,836.80/x
  3. Step 3: Cross multiply
    206,073.60x = 309,110.40 × 65,836.80
  4. Step 4: Simplify right side
    206,073.60x = 20,350,839,582.72
  5. Step 5: Solve for x
    x = 20,350,839,582.72/206,073.60
  6. Step 6: Final answer
    x = 98,755.20

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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.