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Finding the Fourth Proportional to 18,798.12, 25,927.20 and 11,243.88

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Solution

The fourth proportional to 18,798.12, 25,927.20 and 11,243.88 is: 15,508.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,798.12 : 25,927.20 = 11,243.88 : x
  2. Step 2: Convert to fraction form
    18,798.12/25,927.20 = 11,243.88/x
  3. Step 3: Cross multiply
    18,798.12x = 25,927.20 × 11,243.88
  4. Step 4: Simplify right side
    18,798.12x = 291,522,325.54
  5. Step 5: Solve for x
    x = 291,522,325.54/18,798.12
  6. Step 6: Final answer
    x = 15,508.06

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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.