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Finding the Fourth Proportional to 62,698.78, 86,523.96 and 34,405.48

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Solution

The fourth proportional to 62,698.78, 86,523.96 and 34,405.48 is: 47,479.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,698.78 : 86,523.96 = 34,405.48 : x
  2. Step 2: Convert to fraction form
    62,698.78/86,523.96 = 34,405.48/x
  3. Step 3: Cross multiply
    62,698.78x = 86,523.96 × 34,405.48
  4. Step 4: Simplify right side
    62,698.78x = 2,976,898,375.30
  5. Step 5: Solve for x
    x = 2,976,898,375.30/62,698.78
  6. Step 6: Final answer
    x = 47,479.37

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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.