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Finding the Fourth Proportional to 638,951.15, 881,755.05 and 352,467.11

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Solution

The fourth proportional to 638,951.15, 881,755.05 and 352,467.11 is: 486,405.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,951.15 : 881,755.05 = 352,467.11 : x
  2. Step 2: Convert to fraction form
    638,951.15/881,755.05 = 352,467.11/x
  3. Step 3: Cross multiply
    638,951.15x = 881,755.05 × 352,467.11
  4. Step 4: Simplify right side
    638,951.15x = 310,789,654,201.41
  5. Step 5: Solve for x
    x = 310,789,654,201.41/638,951.15
  6. Step 6: Final answer
    x = 486,405.97

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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.