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Finding the Fourth Proportional to 18,251.12, 25,186.44 and 9,867.44

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Solution

The fourth proportional to 18,251.12, 25,186.44 and 9,867.44 is: 13,617.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,251.12 : 25,186.44 = 9,867.44 : x
  2. Step 2: Convert to fraction form
    18,251.12/25,186.44 = 9,867.44/x
  3. Step 3: Cross multiply
    18,251.12x = 25,186.44 × 9,867.44
  4. Step 4: Simplify right side
    18,251.12x = 248,525,685.51
  5. Step 5: Solve for x
    x = 248,525,685.51/18,251.12
  6. Step 6: Final answer
    x = 13,617.01

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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.