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Finding the Fourth Proportional to 13,008.96, 17,910.72 and 11,352.96

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Solution

The fourth proportional to 13,008.96, 17,910.72 and 11,352.96 is: 15,630.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,008.96 : 17,910.72 = 11,352.96 : x
  2. Step 2: Convert to fraction form
    13,008.96/17,910.72 = 11,352.96/x
  3. Step 3: Cross multiply
    13,008.96x = 17,910.72 × 11,352.96
  4. Step 4: Simplify right side
    13,008.96x = 203,339,687.73
  5. Step 5: Solve for x
    x = 203,339,687.73/13,008.96
  6. Step 6: Final answer
    x = 15,630.74

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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.