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Finding the Fourth Proportional to 14,940.12, 20,620.08 and 8,652.48

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Solution

The fourth proportional to 14,940.12, 20,620.08 and 8,652.48 is: 11,941.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,940.12 : 20,620.08 = 8,652.48 : x
  2. Step 2: Convert to fraction form
    14,940.12/20,620.08 = 8,652.48/x
  3. Step 3: Cross multiply
    14,940.12x = 20,620.08 × 8,652.48
  4. Step 4: Simplify right side
    14,940.12x = 178,414,829.80
  5. Step 5: Solve for x
    x = 178,414,829.80/14,940.12
  6. Step 6: Final answer
    x = 11,941.99

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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.