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Finding the Fourth Proportional to 13,919.74, 20,883.07 and 4,059.11

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Solution

The fourth proportional to 13,919.74, 20,883.07 and 4,059.11 is: 6,089.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,919.74 : 20,883.07 = 4,059.11 : x
  2. Step 2: Convert to fraction form
    13,919.74/20,883.07 = 4,059.11/x
  3. Step 3: Cross multiply
    13,919.74x = 20,883.07 × 4,059.11
  4. Step 4: Simplify right side
    13,919.74x = 84,766,678.27
  5. Step 5: Solve for x
    x = 84,766,678.27/13,919.74
  6. Step 6: Final answer
    x = 6,089.67

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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.