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Finding the Fourth Proportional to 43,908.63, 65,872.62 and 17,257.20

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Solution

The fourth proportional to 43,908.63, 65,872.62 and 17,257.20 is: 25,889.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,908.63 : 65,872.62 = 17,257.20 : x
  2. Step 2: Convert to fraction form
    43,908.63/65,872.62 = 17,257.20/x
  3. Step 3: Cross multiply
    43,908.63x = 65,872.62 × 17,257.20
  4. Step 4: Simplify right side
    43,908.63x = 1,136,776,977.86
  5. Step 5: Solve for x
    x = 1,136,776,977.86/43,908.63
  6. Step 6: Final answer
    x = 25,889.60

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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.