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Finding the Fourth Proportional to 737,863.20, 1,107,313.20 and 317,440.80

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Solution

The fourth proportional to 737,863.20, 1,107,313.20 and 317,440.80 is: 476,384.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    737,863.20 : 1,107,313.20 = 317,440.80 : x
  2. Step 2: Convert to fraction form
    737,863.20/1,107,313.20 = 317,440.80/x
  3. Step 3: Cross multiply
    737,863.20x = 1,107,313.20 × 317,440.80
  4. Step 4: Simplify right side
    737,863.20x = 351,506,388,058.56
  5. Step 5: Solve for x
    x = 351,506,388,058.56/737,863.20
  6. Step 6: Final answer
    x = 476,384.22

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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.