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Finding the Fourth Proportional to 512,181.60, 768,272.40 and 245,877.90

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Solution

The fourth proportional to 512,181.60, 768,272.40 and 245,877.90 is: 368,816.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,181.60 : 768,272.40 = 245,877.90 : x
  2. Step 2: Convert to fraction form
    512,181.60/768,272.40 = 245,877.90/x
  3. Step 3: Cross multiply
    512,181.60x = 768,272.40 × 245,877.90
  4. Step 4: Simplify right side
    512,181.60x = 188,901,204,339.96
  5. Step 5: Solve for x
    x = 188,901,204,339.96/512,181.60
  6. Step 6: Final answer
    x = 368,816.85

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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.