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Finding the Fourth Proportional to 104,653.26, 156,979.92 and 30,781.26

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Solution

The fourth proportional to 104,653.26, 156,979.92 and 30,781.26 is: 46,171.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,653.26 : 156,979.92 = 30,781.26 : x
  2. Step 2: Convert to fraction form
    104,653.26/156,979.92 = 30,781.26/x
  3. Step 3: Cross multiply
    104,653.26x = 156,979.92 × 30,781.26
  4. Step 4: Simplify right side
    104,653.26x = 4,832,039,732.30
  5. Step 5: Solve for x
    x = 4,832,039,732.30/104,653.26
  6. Step 6: Final answer
    x = 46,171.90

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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.