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Finding the Fourth Proportional to 512,269.30, 768,622.65 and 245,892.70

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Solution

The fourth proportional to 512,269.30, 768,622.65 and 245,892.70 is: 368,944.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,269.30 : 768,622.65 = 245,892.70 : x
  2. Step 2: Convert to fraction form
    512,269.30/768,622.65 = 245,892.70/x
  3. Step 3: Cross multiply
    512,269.30x = 768,622.65 × 245,892.70
  4. Step 4: Simplify right side
    512,269.30x = 188,998,698,689.66
  5. Step 5: Solve for x
    x = 188,998,698,689.66/512,269.30
  6. Step 6: Final answer
    x = 368,944.03

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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.