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Finding the Fourth Proportional to 56,908.10, 85,374.90 and 17,469.20

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Solution

The fourth proportional to 56,908.10, 85,374.90 and 17,469.20 is: 26,207.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,908.10 : 85,374.90 = 17,469.20 : x
  2. Step 2: Convert to fraction form
    56,908.10/85,374.90 = 17,469.20/x
  3. Step 3: Cross multiply
    56,908.10x = 85,374.90 × 17,469.20
  4. Step 4: Simplify right side
    56,908.10x = 1,491,431,203.08
  5. Step 5: Solve for x
    x = 1,491,431,203.08/56,908.10
  6. Step 6: Final answer
    x = 26,207.71

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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.