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Finding the Fourth Proportional to 14,003.44, 20,992.18 and 5,231.68

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Solution

The fourth proportional to 14,003.44, 20,992.18 and 5,231.68 is: 7,842.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,003.44 : 20,992.18 = 5,231.68 : x
  2. Step 2: Convert to fraction form
    14,003.44/20,992.18 = 5,231.68/x
  3. Step 3: Cross multiply
    14,003.44x = 20,992.18 × 5,231.68
  4. Step 4: Simplify right side
    14,003.44x = 109,824,368.26
  5. Step 5: Solve for x
    x = 109,824,368.26/14,003.44
  6. Step 6: Final answer
    x = 7,842.67

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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.