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Finding the Fourth Proportional to 43,678.63, 65,479.16 and 17,018.44

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Solution

The fourth proportional to 43,678.63, 65,479.16 and 17,018.44 is: 25,512.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,678.63 : 65,479.16 = 17,018.44 : x
  2. Step 2: Convert to fraction form
    43,678.63/65,479.16 = 17,018.44/x
  3. Step 3: Cross multiply
    43,678.63x = 65,479.16 × 17,018.44
  4. Step 4: Simplify right side
    43,678.63x = 1,114,352,906.92
  5. Step 5: Solve for x
    x = 1,114,352,906.92/43,678.63
  6. Step 6: Final answer
    x = 25,512.54

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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.