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Finding the Fourth Proportional to 18,698.85, 25,796.88 and 11,983.24

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Solution

The fourth proportional to 18,698.85, 25,796.88 and 11,983.24 is: 16,532.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,698.85 : 25,796.88 = 11,983.24 : x
  2. Step 2: Convert to fraction form
    18,698.85/25,796.88 = 11,983.24/x
  3. Step 3: Cross multiply
    18,698.85x = 25,796.88 × 11,983.24
  4. Step 4: Simplify right side
    18,698.85x = 309,130,236.54
  5. Step 5: Solve for x
    x = 309,130,236.54/18,698.85
  6. Step 6: Final answer
    x = 16,532.05

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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.