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Finding the Fourth Proportional to 13,299.12, 19,951.92 and 5,905.98

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Solution

The fourth proportional to 13,299.12, 19,951.92 and 5,905.98 is: 8,860.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,299.12 : 19,951.92 = 5,905.98 : x
  2. Step 2: Convert to fraction form
    13,299.12/19,951.92 = 5,905.98/x
  3. Step 3: Cross multiply
    13,299.12x = 19,951.92 × 5,905.98
  4. Step 4: Simplify right side
    13,299.12x = 117,835,640.48
  5. Step 5: Solve for x
    x = 117,835,640.48/13,299.12
  6. Step 6: Final answer
    x = 8,860.41

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1.5x scale

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.