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Finding the Fourth Proportional to 43,909.60, 65,864.44 and 20,552.44

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Solution

The fourth proportional to 43,909.60, 65,864.44 and 20,552.44 is: 30,828.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,909.60 : 65,864.44 = 20,552.44 : x
  2. Step 2: Convert to fraction form
    43,909.60/65,864.44 = 20,552.44/x
  3. Step 3: Cross multiply
    43,909.60x = 65,864.44 × 20,552.44
  4. Step 4: Simplify right side
    43,909.60x = 1,353,674,621.91
  5. Step 5: Solve for x
    x = 1,353,674,621.91/43,909.60
  6. Step 6: Final answer
    x = 30,828.67

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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.