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Finding the Fourth Proportional to 20,363.94, 30,546.72 and 8,669.16

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Solution

The fourth proportional to 20,363.94, 30,546.72 and 8,669.16 is: 13,004.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,363.94 : 30,546.72 = 8,669.16 : x
  2. Step 2: Convert to fraction form
    20,363.94/30,546.72 = 8,669.16/x
  3. Step 3: Cross multiply
    20,363.94x = 30,546.72 × 8,669.16
  4. Step 4: Simplify right side
    20,363.94x = 264,814,403.16
  5. Step 5: Solve for x
    x = 264,814,403.16/20,363.94
  6. Step 6: Final answer
    x = 13,004.08

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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.