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Finding the Fourth Proportional to 548,846.90, 821,715.15 and 492,859.70

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Solution

The fourth proportional to 548,846.90, 821,715.15 and 492,859.70 is: 737,892.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,846.90 : 821,715.15 = 492,859.70 : x
  2. Step 2: Convert to fraction form
    548,846.90/821,715.15 = 492,859.70/x
  3. Step 3: Cross multiply
    548,846.90x = 821,715.15 × 492,859.70
  4. Step 4: Simplify right side
    548,846.90x = 404,990,282,314.46
  5. Step 5: Solve for x
    x = 404,990,282,314.46/548,846.90
  6. Step 6: Final answer
    x = 737,892.99

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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.