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Finding the Fourth Proportional to 366,306.66, 505,006.92 and 313,162.56

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Solution

The fourth proportional to 366,306.66, 505,006.92 and 313,162.56 is: 431,740.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,306.66 : 505,006.92 = 313,162.56 : x
  2. Step 2: Convert to fraction form
    366,306.66/505,006.92 = 313,162.56/x
  3. Step 3: Cross multiply
    366,306.66x = 505,006.92 × 313,162.56
  4. Step 4: Simplify right side
    366,306.66x = 158,149,259,884.92
  5. Step 5: Solve for x
    x = 158,149,259,884.92/366,306.66
  6. Step 6: Final answer
    x = 431,740.06

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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.