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Finding the Fourth Proportional to 16,939.31, 25,417.64 and 8,064.68

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Solution

The fourth proportional to 16,939.31, 25,417.64 and 8,064.68 is: 12,101.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,939.31 : 25,417.64 = 8,064.68 : x
  2. Step 2: Convert to fraction form
    16,939.31/25,417.64 = 8,064.68/x
  3. Step 3: Cross multiply
    16,939.31x = 25,417.64 × 8,064.68
  4. Step 4: Simplify right side
    16,939.31x = 204,985,132.96
  5. Step 5: Solve for x
    x = 204,985,132.96/16,939.31
  6. Step 6: Final answer
    x = 12,101.15

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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.