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Finding the Fourth Proportional to 8,939.97, 13,409.24 and 3,673.49

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Solution

The fourth proportional to 8,939.97, 13,409.24 and 3,673.49 is: 5,509.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,939.97 : 13,409.24 = 3,673.49 : x
  2. Step 2: Convert to fraction form
    8,939.97/13,409.24 = 3,673.49/x
  3. Step 3: Cross multiply
    8,939.97x = 13,409.24 × 3,673.49
  4. Step 4: Simplify right side
    8,939.97x = 49,258,623.63
  5. Step 5: Solve for x
    x = 49,258,623.63/8,939.97
  6. Step 6: Final answer
    x = 5,509.93

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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.