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Finding the Fourth Proportional to 353,892.81, 531,067.49 and 129,234.45

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Solution

The fourth proportional to 353,892.81, 531,067.49 and 129,234.45 is: 193,935.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,892.81 : 531,067.49 = 129,234.45 : x
  2. Step 2: Convert to fraction form
    353,892.81/531,067.49 = 129,234.45/x
  3. Step 3: Cross multiply
    353,892.81x = 531,067.49 × 129,234.45
  4. Step 4: Simplify right side
    353,892.81x = 68,632,216,812.99
  5. Step 5: Solve for x
    x = 68,632,216,812.99/353,892.81
  6. Step 6: Final answer
    x = 193,935.04

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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.