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Finding the Fourth Proportional to 72,475.73, 108,739.49 and 44,070.48

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Solution

The fourth proportional to 72,475.73, 108,739.49 and 44,070.48 is: 66,121.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,475.73 : 108,739.49 = 44,070.48 : x
  2. Step 2: Convert to fraction form
    72,475.73/108,739.49 = 44,070.48/x
  3. Step 3: Cross multiply
    72,475.73x = 108,739.49 × 44,070.48
  4. Step 4: Simplify right side
    72,475.73x = 4,792,201,304.29
  5. Step 5: Solve for x
    x = 4,792,201,304.29/72,475.73
  6. Step 6: Final answer
    x = 66,121.46

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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.