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Finding the Fourth Proportional to 317,722.38, 476,582.53 and 115,318.22

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Solution

The fourth proportional to 317,722.38, 476,582.53 and 115,318.22 is: 172,976.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,722.38 : 476,582.53 = 115,318.22 : x
  2. Step 2: Convert to fraction form
    317,722.38/476,582.53 = 115,318.22/x
  3. Step 3: Cross multiply
    317,722.38x = 476,582.53 × 115,318.22
  4. Step 4: Simplify right side
    317,722.38x = 54,958,646,371.49
  5. Step 5: Solve for x
    x = 54,958,646,371.49/317,722.38
  6. Step 6: Final answer
    x = 172,976.94

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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.