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Finding the Fourth Proportional to 18,530.62, 27,787.54 and 7,995.67

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Solution

The fourth proportional to 18,530.62, 27,787.54 and 7,995.67 is: 11,989.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,530.62 : 27,787.54 = 7,995.67 : x
  2. Step 2: Convert to fraction form
    18,530.62/27,787.54 = 7,995.67/x
  3. Step 3: Cross multiply
    18,530.62x = 27,787.54 × 7,995.67
  4. Step 4: Simplify right side
    18,530.62x = 222,179,999.95
  5. Step 5: Solve for x
    x = 222,179,999.95/18,530.62
  6. Step 6: Final answer
    x = 11,989.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.