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Finding the Fourth Proportional to 393,744.30, 590,227.65 and 156,770.70

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Solution

The fourth proportional to 393,744.30, 590,227.65 and 156,770.70 is: 235,001.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,744.30 : 590,227.65 = 156,770.70 : x
  2. Step 2: Convert to fraction form
    393,744.30/590,227.65 = 156,770.70/x
  3. Step 3: Cross multiply
    393,744.30x = 590,227.65 × 156,770.70
  4. Step 4: Simplify right side
    393,744.30x = 92,530,401,849.86
  5. Step 5: Solve for x
    x = 92,530,401,849.86/393,744.30
  6. Step 6: Final answer
    x = 235,001.25

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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.