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Finding the Fourth Proportional to 18,396.48, 27,599.04 and 8,011.20

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Solution

The fourth proportional to 18,396.48, 27,599.04 and 8,011.20 is: 12,018.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,396.48 : 27,599.04 = 8,011.20 : x
  2. Step 2: Convert to fraction form
    18,396.48/27,599.04 = 8,011.20/x
  3. Step 3: Cross multiply
    18,396.48x = 27,599.04 × 8,011.20
  4. Step 4: Simplify right side
    18,396.48x = 221,101,429.25
  5. Step 5: Solve for x
    x = 221,101,429.25/18,396.48
  6. Step 6: Final answer
    x = 12,018.68

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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.