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Finding the Fourth Proportional to 18,090.98, 24,954.50 and 11,958.68

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Solution

The fourth proportional to 18,090.98, 24,954.50 and 11,958.68 is: 16,495.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,090.98 : 24,954.50 = 11,958.68 : x
  2. Step 2: Convert to fraction form
    18,090.98/24,954.50 = 11,958.68/x
  3. Step 3: Cross multiply
    18,090.98x = 24,954.50 × 11,958.68
  4. Step 4: Simplify right side
    18,090.98x = 298,422,695.49
  5. Step 5: Solve for x
    x = 298,422,695.49/18,090.98
  6. Step 6: Final answer
    x = 16,495.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.