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Finding the Fourth Proportional to 704,951.28, 1,057,310.28 and 231,640.74

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Solution

The fourth proportional to 704,951.28, 1,057,310.28 and 231,640.74 is: 347,422.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,951.28 : 1,057,310.28 = 231,640.74 : x
  2. Step 2: Convert to fraction form
    704,951.28/1,057,310.28 = 231,640.74/x
  3. Step 3: Cross multiply
    704,951.28x = 1,057,310.28 × 231,640.74
  4. Step 4: Simplify right side
    704,951.28x = 244,916,135,668.81
  5. Step 5: Solve for x
    x = 244,916,135,668.81/704,951.28
  6. Step 6: Final answer
    x = 347,422.78

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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.