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Finding the Fourth Proportional to 18,558.82, 27,836.76 and 7,457.67

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Solution

The fourth proportional to 18,558.82, 27,836.76 and 7,457.67 is: 11,185.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,558.82 : 27,836.76 = 7,457.67 : x
  2. Step 2: Convert to fraction form
    18,558.82/27,836.76 = 7,457.67/x
  3. Step 3: Cross multiply
    18,558.82x = 27,836.76 × 7,457.67
  4. Step 4: Simplify right side
    18,558.82x = 207,597,397.92
  5. Step 5: Solve for x
    x = 207,597,397.92/18,558.82
  6. Step 6: Final answer
    x = 11,185.92

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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.