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Finding the Fourth Proportional to 316,958.33, 476,029.81 and 279,021.17

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Solution

The fourth proportional to 316,958.33, 476,029.81 and 279,021.17 is: 419,053.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,958.33 : 476,029.81 = 279,021.17 : x
  2. Step 2: Convert to fraction form
    316,958.33/476,029.81 = 279,021.17/x
  3. Step 3: Cross multiply
    316,958.33x = 476,029.81 × 279,021.17
  4. Step 4: Simplify right side
    316,958.33x = 132,822,396,079.93
  5. Step 5: Solve for x
    x = 132,822,396,079.93/316,958.33
  6. Step 6: Final answer
    x = 419,053.18

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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.