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Finding the Fourth Proportional to 43,311.22, 64,973.64 and 18,351.42

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Solution

The fourth proportional to 43,311.22, 64,973.64 and 18,351.42 is: 27,530.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,311.22 : 64,973.64 = 18,351.42 : x
  2. Step 2: Convert to fraction form
    43,311.22/64,973.64 = 18,351.42/x
  3. Step 3: Cross multiply
    43,311.22x = 64,973.64 × 18,351.42
  4. Step 4: Simplify right side
    43,311.22x = 1,192,358,556.57
  5. Step 5: Solve for x
    x = 1,192,358,556.57/43,311.22
  6. Step 6: Final answer
    x = 27,530.02

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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.