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Finding the Fourth Proportional to 26,872.94, 40,264.52 and 18,962.37

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Solution

The fourth proportional to 26,872.94, 40,264.52 and 18,962.37 is: 28,411.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,872.94 : 40,264.52 = 18,962.37 : x
  2. Step 2: Convert to fraction form
    26,872.94/40,264.52 = 18,962.37/x
  3. Step 3: Cross multiply
    26,872.94x = 40,264.52 × 18,962.37
  4. Step 4: Simplify right side
    26,872.94x = 763,510,631.30
  5. Step 5: Solve for x
    x = 763,510,631.30/26,872.94
  6. Step 6: Final answer
    x = 28,411.88

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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.