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Finding the Fourth Proportional to 71,912.64, 107,791.04 and 36,804.16

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Solution

The fourth proportional to 71,912.64, 107,791.04 and 36,804.16 is: 55,166.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,912.64 : 107,791.04 = 36,804.16 : x
  2. Step 2: Convert to fraction form
    71,912.64/107,791.04 = 36,804.16/x
  3. Step 3: Cross multiply
    71,912.64x = 107,791.04 × 36,804.16
  4. Step 4: Simplify right side
    71,912.64x = 3,967,158,682.73
  5. Step 5: Solve for x
    x = 3,967,158,682.73/71,912.64
  6. Step 6: Final answer
    x = 55,166.36

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1.5x scale

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.