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Finding the Fourth Proportional to 72,475.74, 108,920.97 and 35,565.66

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Solution

The fourth proportional to 72,475.74, 108,920.97 and 35,565.66 is: 53,450.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,475.74 : 108,920.97 = 35,565.66 : x
  2. Step 2: Convert to fraction form
    72,475.74/108,920.97 = 35,565.66/x
  3. Step 3: Cross multiply
    72,475.74x = 108,920.97 × 35,565.66
  4. Step 4: Simplify right side
    72,475.74x = 3,873,846,185.89
  5. Step 5: Solve for x
    x = 3,873,846,185.89/72,475.74
  6. Step 6: Final answer
    x = 53,450.25

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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.