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Finding the Fourth Proportional to 18,396.99, 27,598.19 and 5,912.90

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Solution

The fourth proportional to 18,396.99, 27,598.19 and 5,912.90 is: 8,870.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,396.99 : 27,598.19 = 5,912.90 : x
  2. Step 2: Convert to fraction form
    18,396.99/27,598.19 = 5,912.90/x
  3. Step 3: Cross multiply
    18,396.99x = 27,598.19 × 5,912.90
  4. Step 4: Simplify right side
    18,396.99x = 163,185,273.59
  5. Step 5: Solve for x
    x = 163,185,273.59/18,396.99
  6. Step 6: Final answer
    x = 8,870.22

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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.