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Finding the Fourth Proportional to 384,078.40, 574,805.40 and 336,839.20

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Solution

The fourth proportional to 384,078.40, 574,805.40 and 336,839.20 is: 504,107.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,078.40 : 574,805.40 = 336,839.20 : x
  2. Step 2: Convert to fraction form
    384,078.40/574,805.40 = 336,839.20/x
  3. Step 3: Cross multiply
    384,078.40x = 574,805.40 × 336,839.20
  4. Step 4: Simplify right side
    384,078.40x = 193,616,991,091.68
  5. Step 5: Solve for x
    x = 193,616,991,091.68/384,078.40
  6. Step 6: Final answer
    x = 504,107.99

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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.