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Finding the Fourth Proportional to 14,939.77, 20,616.64 and 8,652.01

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Solution

The fourth proportional to 14,939.77, 20,616.64 and 8,652.01 is: 11,939.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,939.77 : 20,616.64 = 8,652.01 : x
  2. Step 2: Convert to fraction form
    14,939.77/20,616.64 = 8,652.01/x
  3. Step 3: Cross multiply
    14,939.77x = 20,616.64 × 8,652.01
  4. Step 4: Simplify right side
    14,939.77x = 178,375,375.45
  5. Step 5: Solve for x
    x = 178,375,375.45/14,939.77
  6. Step 6: Final answer
    x = 11,939.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.