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Finding the Fourth Proportional to 16,777.31, 25,136.80 and 8,972.15

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Solution

The fourth proportional to 16,777.31, 25,136.80 and 8,972.15 is: 13,442.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,777.31 : 25,136.80 = 8,972.15 : x
  2. Step 2: Convert to fraction form
    16,777.31/25,136.80 = 8,972.15/x
  3. Step 3: Cross multiply
    16,777.31x = 25,136.80 × 8,972.15
  4. Step 4: Simplify right side
    16,777.31x = 225,530,992.01
  5. Step 5: Solve for x
    x = 225,530,992.01/16,777.31
  6. Step 6: Final answer
    x = 13,442.62

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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.