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Finding the Fourth Proportional to 13,599.72, 18,766.26 and 8,295.84

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Solution

The fourth proportional to 13,599.72, 18,766.26 and 8,295.84 is: 11,447.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,599.72 : 18,766.26 = 8,295.84 : x
  2. Step 2: Convert to fraction form
    13,599.72/18,766.26 = 8,295.84/x
  3. Step 3: Cross multiply
    13,599.72x = 18,766.26 × 8,295.84
  4. Step 4: Simplify right side
    13,599.72x = 155,681,890.36
  5. Step 5: Solve for x
    x = 155,681,890.36/13,599.72
  6. Step 6: Final answer
    x = 11,447.43

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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.