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Finding the Fourth Proportional to 43,609.45, 65,415.50 and 12,020.03

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Solution

The fourth proportional to 43,609.45, 65,415.50 and 12,020.03 is: 18,030.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,609.45 : 65,415.50 = 12,020.03 : x
  2. Step 2: Convert to fraction form
    43,609.45/65,415.50 = 12,020.03/x
  3. Step 3: Cross multiply
    43,609.45x = 65,415.50 × 12,020.03
  4. Step 4: Simplify right side
    43,609.45x = 786,296,451.64
  5. Step 5: Solve for x
    x = 786,296,451.64/43,609.45
  6. Step 6: Final answer
    x = 18,030.41

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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.