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Finding the Fourth Proportional to 26,633.31, 39,956.21 and 7,913.50

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Solution

The fourth proportional to 26,633.31, 39,956.21 and 7,913.50 is: 11,872.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,633.31 : 39,956.21 = 7,913.50 : x
  2. Step 2: Convert to fraction form
    26,633.31/39,956.21 = 7,913.50/x
  3. Step 3: Cross multiply
    26,633.31x = 39,956.21 × 7,913.50
  4. Step 4: Simplify right side
    26,633.31x = 316,193,380.31
  5. Step 5: Solve for x
    x = 316,193,380.31/26,633.31
  6. Step 6: Final answer
    x = 11,872.10

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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.