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Finding the Fourth Proportional to 468,811.78, 646,963.38 and 253,951.85

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Solution

The fourth proportional to 468,811.78, 646,963.38 and 253,951.85 is: 350,455.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,811.78 : 646,963.38 = 253,951.85 : x
  2. Step 2: Convert to fraction form
    468,811.78/646,963.38 = 253,951.85/x
  3. Step 3: Cross multiply
    468,811.78x = 646,963.38 × 253,951.85
  4. Step 4: Simplify right side
    468,811.78x = 164,297,548,850.66
  5. Step 5: Solve for x
    x = 164,297,548,850.66/468,811.78
  6. Step 6: Final answer
    x = 350,455.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.