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Finding the Fourth Proportional to 19,481.95, 26,884.55 and 10,983.99

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Solution

The fourth proportional to 19,481.95, 26,884.55 and 10,983.99 is: 15,157.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,481.95 : 26,884.55 = 10,983.99 : x
  2. Step 2: Convert to fraction form
    19,481.95/26,884.55 = 10,983.99/x
  3. Step 3: Cross multiply
    19,481.95x = 26,884.55 × 10,983.99
  4. Step 4: Simplify right side
    19,481.95x = 295,299,750.94
  5. Step 5: Solve for x
    x = 295,299,750.94/19,481.95
  6. Step 6: Final answer
    x = 15,157.61

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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.