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Finding the Fourth Proportional to 18,539.96, 27,797.60 and 11,962.55

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Solution

The fourth proportional to 18,539.96, 27,797.60 and 11,962.55 is: 17,935.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,539.96 : 27,797.60 = 11,962.55 : x
  2. Step 2: Convert to fraction form
    18,539.96/27,797.60 = 11,962.55/x
  3. Step 3: Cross multiply
    18,539.96x = 27,797.60 × 11,962.55
  4. Step 4: Simplify right side
    18,539.96x = 332,529,981.08
  5. Step 5: Solve for x
    x = 332,529,981.08/18,539.96
  6. Step 6: Final answer
    x = 17,935.86

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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.