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Finding the Fourth Proportional to 18,820.94, 25,966.94 and 11,751.44

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Solution

The fourth proportional to 18,820.94, 25,966.94 and 11,751.44 is: 16,213.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820.94 : 25,966.94 = 11,751.44 : x
  2. Step 2: Convert to fraction form
    18,820.94/25,966.94 = 11,751.44/x
  3. Step 3: Cross multiply
    18,820.94x = 25,966.94 × 11,751.44
  4. Step 4: Simplify right side
    18,820.94x = 305,148,937.39
  5. Step 5: Solve for x
    x = 305,148,937.39/18,820.94
  6. Step 6: Final answer
    x = 16,213.27

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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.