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Finding the Fourth Proportional to 216,625.63, 324,945.86 and 74,469.69

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Solution

The fourth proportional to 216,625.63, 324,945.86 and 74,469.69 is: 111,707.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,625.63 : 324,945.86 = 74,469.69 : x
  2. Step 2: Convert to fraction form
    216,625.63/324,945.86 = 74,469.69/x
  3. Step 3: Cross multiply
    216,625.63x = 324,945.86 × 74,469.69
  4. Step 4: Simplify right side
    216,625.63x = 24,198,617,088.64
  5. Step 5: Solve for x
    x = 24,198,617,088.64/216,625.63
  6. Step 6: Final answer
    x = 111,707.08

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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.