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Finding the Fourth Proportional to 522,067.20, 781,351.20 and 459,081.60

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Solution

The fourth proportional to 522,067.20, 781,351.20 and 459,081.60 is: 687,083.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,067.20 : 781,351.20 = 459,081.60 : x
  2. Step 2: Convert to fraction form
    522,067.20/781,351.20 = 459,081.60/x
  3. Step 3: Cross multiply
    522,067.20x = 781,351.20 × 459,081.60
  4. Step 4: Simplify right side
    522,067.20x = 358,703,959,057.92
  5. Step 5: Solve for x
    x = 358,703,959,057.92/522,067.20
  6. Step 6: Final answer
    x = 687,083.88

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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.