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Finding the Fourth Proportional to 354,719.20, 532,078.80 and 222,008.80

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Solution

The fourth proportional to 354,719.20, 532,078.80 and 222,008.80 is: 333,013.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,719.20 : 532,078.80 = 222,008.80 : x
  2. Step 2: Convert to fraction form
    354,719.20/532,078.80 = 222,008.80/x
  3. Step 3: Cross multiply
    354,719.20x = 532,078.80 × 222,008.80
  4. Step 4: Simplify right side
    354,719.20x = 118,126,175,893.44
  5. Step 5: Solve for x
    x = 118,126,175,893.44/354,719.20
  6. Step 6: Final answer
    x = 333,013.20

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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.