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Finding the Fourth Proportional to 453,067.60, 679,990.20 and 200,736.40

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Solution

The fourth proportional to 453,067.60, 679,990.20 and 200,736.40 is: 301,276.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,067.60 : 679,990.20 = 200,736.40 : x
  2. Step 2: Convert to fraction form
    453,067.60/679,990.20 = 200,736.40/x
  3. Step 3: Cross multiply
    453,067.60x = 679,990.20 × 200,736.40
  4. Step 4: Simplify right side
    453,067.60x = 136,498,784,783.28
  5. Step 5: Solve for x
    x = 136,498,784,783.28/453,067.60
  6. Step 6: Final answer
    x = 301,276.86

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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.