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Finding the Fourth Proportional to 43,872.90, 65,712.15 and 36,096.90

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Solution

The fourth proportional to 43,872.90, 65,712.15 and 36,096.90 is: 54,065.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,872.90 : 65,712.15 = 36,096.90 : x
  2. Step 2: Convert to fraction form
    43,872.90/65,712.15 = 36,096.90/x
  3. Step 3: Cross multiply
    43,872.90x = 65,712.15 × 36,096.90
  4. Step 4: Simplify right side
    43,872.90x = 2,372,004,907.34
  5. Step 5: Solve for x
    x = 2,372,004,907.34/43,872.90
  6. Step 6: Final answer
    x = 54,065.38

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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.