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Finding the Fourth Proportional to 8,531, 11,772.56 and 4,994.24

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Solution

The fourth proportional to 8,531, 11,772.56 and 4,994.24 is: 6,891.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,531 : 11,772.56 = 4,994.24 : x
  2. Step 2: Convert to fraction form
    8,531/11,772.56 = 4,994.24/x
  3. Step 3: Cross multiply
    8,531x = 11,772.56 × 4,994.24
  4. Step 4: Simplify right side
    8,531x = 58,794,990.05
  5. Step 5: Solve for x
    x = 58,794,990.05/8,531
  6. Step 6: Final answer
    x = 6,891.92

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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.