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Finding the Fourth Proportional to 11,951.59, 16,490.49 and 6,915.67

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Solution

The fourth proportional to 11,951.59, 16,490.49 and 6,915.67 is: 9,542.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,951.59 : 16,490.49 = 6,915.67 : x
  2. Step 2: Convert to fraction form
    11,951.59/16,490.49 = 6,915.67/x
  3. Step 3: Cross multiply
    11,951.59x = 16,490.49 × 6,915.67
  4. Step 4: Simplify right side
    11,951.59x = 114,042,786.98
  5. Step 5: Solve for x
    x = 114,042,786.98/11,951.59
  6. Step 6: Final answer
    x = 9,542.06

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1.5x scale

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.