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Finding the Fourth Proportional to 43,372.80, 65,059.20 and 12,208.04

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Solution

The fourth proportional to 43,372.80, 65,059.20 and 12,208.04 is: 18,312.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,372.80 : 65,059.20 = 12,208.04 : x
  2. Step 2: Convert to fraction form
    43,372.80/65,059.20 = 12,208.04/x
  3. Step 3: Cross multiply
    43,372.80x = 65,059.20 × 12,208.04
  4. Step 4: Simplify right side
    43,372.80x = 794,245,315.97
  5. Step 5: Solve for x
    x = 794,245,315.97/43,372.80
  6. Step 6: Final answer
    x = 18,312.06

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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.