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Finding the Fourth Proportional to 14,968.25, 20,657.06 and 8,255.31

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Solution

The fourth proportional to 14,968.25, 20,657.06 and 8,255.31 is: 11,392.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,968.25 : 20,657.06 = 8,255.31 : x
  2. Step 2: Convert to fraction form
    14,968.25/20,657.06 = 8,255.31/x
  3. Step 3: Cross multiply
    14,968.25x = 20,657.06 × 8,255.31
  4. Step 4: Simplify right side
    14,968.25x = 170,530,289.43
  5. Step 5: Solve for x
    x = 170,530,289.43/14,968.25
  6. Step 6: Final answer
    x = 11,392.80

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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.