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Finding the Fourth Proportional to 234,672.80, 352,009.20 and 76,863.20

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Solution

The fourth proportional to 234,672.80, 352,009.20 and 76,863.20 is: 115,294.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,672.80 : 352,009.20 = 76,863.20 : x
  2. Step 2: Convert to fraction form
    234,672.80/352,009.20 = 76,863.20/x
  3. Step 3: Cross multiply
    234,672.80x = 352,009.20 × 76,863.20
  4. Step 4: Simplify right side
    234,672.80x = 27,056,553,541.44
  5. Step 5: Solve for x
    x = 27,056,553,541.44/234,672.80
  6. Step 6: Final answer
    x = 115,294.80

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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.