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Finding the Fourth Proportional to 205,727.80, 308,591.70 and 164,255.80

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Solution

The fourth proportional to 205,727.80, 308,591.70 and 164,255.80 is: 246,383.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,727.80 : 308,591.70 = 164,255.80 : x
  2. Step 2: Convert to fraction form
    205,727.80/308,591.70 = 164,255.80/x
  3. Step 3: Cross multiply
    205,727.80x = 308,591.70 × 164,255.80
  4. Step 4: Simplify right side
    205,727.80x = 50,687,976,556.86
  5. Step 5: Solve for x
    x = 50,687,976,556.86/205,727.80
  6. Step 6: Final answer
    x = 246,383.70

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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.