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Finding the Fourth Proportional to 12,951.44, 19,459.99 and 12,080.73

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Solution

The fourth proportional to 12,951.44, 19,459.99 and 12,080.73 is: 18,151.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,951.44 : 19,459.99 = 12,080.73 : x
  2. Step 2: Convert to fraction form
    12,951.44/19,459.99 = 12,080.73/x
  3. Step 3: Cross multiply
    12,951.44x = 19,459.99 × 12,080.73
  4. Step 4: Simplify right side
    12,951.44x = 235,090,884.99
  5. Step 5: Solve for x
    x = 235,090,884.99/12,951.44
  6. Step 6: Final answer
    x = 18,151.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.