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Finding the Fourth Proportional to 617,920.38, 927,028.53 and 257,891.04

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Solution

The fourth proportional to 617,920.38, 927,028.53 and 257,891.04 is: 386,898.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,920.38 : 927,028.53 = 257,891.04 : x
  2. Step 2: Convert to fraction form
    617,920.38/927,028.53 = 257,891.04/x
  3. Step 3: Cross multiply
    617,920.38x = 927,028.53 × 257,891.04
  4. Step 4: Simplify right side
    617,920.38x = 239,072,351,711.37
  5. Step 5: Solve for x
    x = 239,072,351,711.37/617,920.38
  6. Step 6: Final answer
    x = 386,898.31

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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.