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Finding the Fourth Proportional to 11,124.72, 16,687.92 and 4,554

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Solution

The fourth proportional to 11,124.72, 16,687.92 and 4,554 is: 6,831.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,124.72 : 16,687.92 = 4,554 : x
  2. Step 2: Convert to fraction form
    11,124.72/16,687.92 = 4,554/x
  3. Step 3: Cross multiply
    11,124.72x = 16,687.92 × 4,554
  4. Step 4: Simplify right side
    11,124.72x = 75,996,787.68
  5. Step 5: Solve for x
    x = 75,996,787.68/11,124.72
  6. Step 6: Final answer
    x = 6,831.34

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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.