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Finding the Fourth Proportional to 18,396.42, 27,575.42 and 8,527.56

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Solution

The fourth proportional to 18,396.42, 27,575.42 and 8,527.56 is: 12,782.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,396.42 : 27,575.42 = 8,527.56 : x
  2. Step 2: Convert to fraction form
    18,396.42/27,575.42 = 8,527.56/x
  3. Step 3: Cross multiply
    18,396.42x = 27,575.42 × 8,527.56
  4. Step 4: Simplify right side
    18,396.42x = 235,151,048.58
  5. Step 5: Solve for x
    x = 235,151,048.58/18,396.42
  6. Step 6: Final answer
    x = 12,782.44

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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.