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Finding the Fourth Proportional to 408,727.17, 613,194.44 and 128,246.85

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Solution

The fourth proportional to 408,727.17, 613,194.44 and 128,246.85 is: 192,402.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,727.17 : 613,194.44 = 128,246.85 : x
  2. Step 2: Convert to fraction form
    408,727.17/613,194.44 = 128,246.85/x
  3. Step 3: Cross multiply
    408,727.17x = 613,194.44 × 128,246.85
  4. Step 4: Simplify right side
    408,727.17x = 78,640,254,726.28
  5. Step 5: Solve for x
    x = 78,640,254,726.28/408,727.17
  6. Step 6: Final answer
    x = 192,402.81

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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.