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Finding the Fourth Proportional to 43,671.78, 65,452.86 and 18,682.46

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Solution

The fourth proportional to 43,671.78, 65,452.86 and 18,682.46 is: 28,000.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,671.78 : 65,452.86 = 18,682.46 : x
  2. Step 2: Convert to fraction form
    43,671.78/65,452.86 = 18,682.46/x
  3. Step 3: Cross multiply
    43,671.78x = 65,452.86 × 18,682.46
  4. Step 4: Simplify right side
    43,671.78x = 1,222,820,438.84
  5. Step 5: Solve for x
    x = 1,222,820,438.84/43,671.78
  6. Step 6: Final answer
    x = 28,000.24

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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.