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Finding the Fourth Proportional to 393,772.73, 543,179.91 and 248,526.88

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Solution

The fourth proportional to 393,772.73, 543,179.91 and 248,526.88 is: 342,824.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,772.73 : 543,179.91 = 248,526.88 : x
  2. Step 2: Convert to fraction form
    393,772.73/543,179.91 = 248,526.88/x
  3. Step 3: Cross multiply
    393,772.73x = 543,179.91 × 248,526.88
  4. Step 4: Simplify right side
    393,772.73x = 134,994,809,542.43
  5. Step 5: Solve for x
    x = 134,994,809,542.43/393,772.73
  6. Step 6: Final answer
    x = 342,824.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.