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Finding the Fourth Proportional to 69,315.38, 95,679.74 and 41,021

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Solution

The fourth proportional to 69,315.38, 95,679.74 and 41,021 is: 56,623.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,315.38 : 95,679.74 = 41,021 : x
  2. Step 2: Convert to fraction form
    69,315.38/95,679.74 = 41,021/x
  3. Step 3: Cross multiply
    69,315.38x = 95,679.74 × 41,021
  4. Step 4: Simplify right side
    69,315.38x = 3,924,878,409.44
  5. Step 5: Solve for x
    x = 3,924,878,409.44/69,315.38
  6. Step 6: Final answer
    x = 56,623.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.