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Finding the Fourth Proportional to 71,797.53, 99,083.88 and 39,968.49

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Solution

The fourth proportional to 71,797.53, 99,083.88 and 39,968.49 is: 55,158.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,797.53 : 99,083.88 = 39,968.49 : x
  2. Step 2: Convert to fraction form
    71,797.53/99,083.88 = 39,968.49/x
  3. Step 3: Cross multiply
    71,797.53x = 99,083.88 × 39,968.49
  4. Step 4: Simplify right side
    71,797.53x = 3,960,233,066.94
  5. Step 5: Solve for x
    x = 3,960,233,066.94/71,797.53
  6. Step 6: Final answer
    x = 55,158.35

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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.