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Finding the Fourth Proportional to 263,061.20, 394,753.80 and 113,373.20

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Solution

The fourth proportional to 263,061.20, 394,753.80 and 113,373.20 is: 170,129.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,061.20 : 394,753.80 = 113,373.20 : x
  2. Step 2: Convert to fraction form
    263,061.20/394,753.80 = 113,373.20/x
  3. Step 3: Cross multiply
    263,061.20x = 394,753.80 × 113,373.20
  4. Step 4: Simplify right side
    263,061.20x = 44,754,501,518.16
  5. Step 5: Solve for x
    x = 44,754,501,518.16/263,061.20
  6. Step 6: Final answer
    x = 170,129.62

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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.