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Finding the Fourth Proportional to 43,651.72, 65,473.74 and 18,684.04

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Solution

The fourth proportional to 43,651.72, 65,473.74 and 18,684.04 is: 28,024.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,651.72 : 65,473.74 = 18,684.04 : x
  2. Step 2: Convert to fraction form
    43,651.72/65,473.74 = 18,684.04/x
  3. Step 3: Cross multiply
    43,651.72x = 65,473.74 × 18,684.04
  4. Step 4: Simplify right side
    43,651.72x = 1,223,313,977.11
  5. Step 5: Solve for x
    x = 1,223,313,977.11/43,651.72
  6. Step 6: Final answer
    x = 28,024.42

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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.