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Finding the Fourth Proportional to 354,635.72, 531,914.13 and 126,922.16

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Solution

The fourth proportional to 354,635.72, 531,914.13 and 126,922.16 is: 190,369.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,635.72 : 531,914.13 = 126,922.16 : x
  2. Step 2: Convert to fraction form
    354,635.72/531,914.13 = 126,922.16/x
  3. Step 3: Cross multiply
    354,635.72x = 531,914.13 × 126,922.16
  4. Step 4: Simplify right side
    354,635.72x = 67,511,690,314.12
  5. Step 5: Solve for x
    x = 67,511,690,314.12/354,635.72
  6. Step 6: Final answer
    x = 190,369.12

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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.