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Finding the Fourth Proportional to 308,766.76, 426,098.12 and 167,454.76

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Solution

The fourth proportional to 308,766.76, 426,098.12 and 167,454.76 is: 231,087.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,766.76 : 426,098.12 = 167,454.76 : x
  2. Step 2: Convert to fraction form
    308,766.76/426,098.12 = 167,454.76/x
  3. Step 3: Cross multiply
    308,766.76x = 426,098.12 × 167,454.76
  4. Step 4: Simplify right side
    308,766.76x = 71,352,158,421.05
  5. Step 5: Solve for x
    x = 71,352,158,421.05/308,766.76
  6. Step 6: Final answer
    x = 231,087.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.