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Finding the Fourth Proportional to 325,806.12, 488,555.82 and 126,219.96

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Solution

The fourth proportional to 325,806.12, 488,555.82 and 126,219.96 is: 189,270.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,806.12 : 488,555.82 = 126,219.96 : x
  2. Step 2: Convert to fraction form
    325,806.12/488,555.82 = 126,219.96/x
  3. Step 3: Cross multiply
    325,806.12x = 488,555.82 × 126,219.96
  4. Step 4: Simplify right side
    325,806.12x = 61,665,496,058.17
  5. Step 5: Solve for x
    x = 61,665,496,058.17/325,806.12
  6. Step 6: Final answer
    x = 189,270.53

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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.