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Finding the Fourth Proportional to 16,963.62, 25,447.86 and 5,278.02

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Solution

The fourth proportional to 16,963.62, 25,447.86 and 5,278.02 is: 7,917.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,963.62 : 25,447.86 = 5,278.02 : x
  2. Step 2: Convert to fraction form
    16,963.62/25,447.86 = 5,278.02/x
  3. Step 3: Cross multiply
    16,963.62x = 25,447.86 × 5,278.02
  4. Step 4: Simplify right side
    16,963.62x = 134,314,314.04
  5. Step 5: Solve for x
    x = 134,314,314.04/16,963.62
  6. Step 6: Final answer
    x = 7,917.79

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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.