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Finding the Fourth Proportional to 254,605.22, 381,979.32 and 74,694.90

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Solution

The fourth proportional to 254,605.22, 381,979.32 and 74,694.90 is: 112,063.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,605.22 : 381,979.32 = 74,694.90 : x
  2. Step 2: Convert to fraction form
    254,605.22/381,979.32 = 74,694.90/x
  3. Step 3: Cross multiply
    254,605.22x = 381,979.32 × 74,694.90
  4. Step 4: Simplify right side
    254,605.22x = 28,531,907,109.47
  5. Step 5: Solve for x
    x = 28,531,907,109.47/254,605.22
  6. Step 6: Final answer
    x = 112,063.32

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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.