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Finding the Fourth Proportional to 14,969.87, 20,658.08 and 8,255.37

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Solution

The fourth proportional to 14,969.87, 20,658.08 and 8,255.37 is: 11,392.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,969.87 : 20,658.08 = 8,255.37 : x
  2. Step 2: Convert to fraction form
    14,969.87/20,658.08 = 8,255.37/x
  3. Step 3: Cross multiply
    14,969.87x = 20,658.08 × 8,255.37
  4. Step 4: Simplify right side
    14,969.87x = 170,540,052.61
  5. Step 5: Solve for x
    x = 170,540,052.61/14,969.87
  6. Step 6: Final answer
    x = 11,392.22

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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.