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Finding the Fourth Proportional to 71,767.68, 98,936.74 and 50,480.88

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Solution

The fourth proportional to 71,767.68, 98,936.74 and 50,480.88 is: 69,591.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,767.68 : 98,936.74 = 50,480.88 : x
  2. Step 2: Convert to fraction form
    71,767.68/98,936.74 = 50,480.88/x
  3. Step 3: Cross multiply
    71,767.68x = 98,936.74 × 50,480.88
  4. Step 4: Simplify right side
    71,767.68x = 4,994,413,699.53
  5. Step 5: Solve for x
    x = 4,994,413,699.53/71,767.68
  6. Step 6: Final answer
    x = 69,591.41

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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.