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Finding the Fourth Proportional to 18,449.81, 27,681.66 and 11,059.58

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Solution

The fourth proportional to 18,449.81, 27,681.66 and 11,059.58 is: 16,593.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,449.81 : 27,681.66 = 11,059.58 : x
  2. Step 2: Convert to fraction form
    18,449.81/27,681.66 = 11,059.58/x
  3. Step 3: Cross multiply
    18,449.81x = 27,681.66 × 11,059.58
  4. Step 4: Simplify right side
    18,449.81x = 306,147,533.30
  5. Step 5: Solve for x
    x = 306,147,533.30/18,449.81
  6. Step 6: Final answer
    x = 16,593.53

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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.