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Finding the Fourth Proportional to 71,694.84, 98,963.49 and 43,400.54

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Solution

The fourth proportional to 71,694.84, 98,963.49 and 43,400.54 is: 59,907.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,694.84 : 98,963.49 = 43,400.54 : x
  2. Step 2: Convert to fraction form
    71,694.84/98,963.49 = 43,400.54/x
  3. Step 3: Cross multiply
    71,694.84x = 98,963.49 × 43,400.54
  4. Step 4: Simplify right side
    71,694.84x = 4,295,068,411.47
  5. Step 5: Solve for x
    x = 4,295,068,411.47/71,694.84
  6. Step 6: Final answer
    x = 59,907.64

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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.