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Finding the Fourth Proportional to 165,986, 248,990.34 and 47,648.24

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Solution

The fourth proportional to 165,986, 248,990.34 and 47,648.24 is: 71,475.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,986 : 248,990.34 = 47,648.24 : x
  2. Step 2: Convert to fraction form
    165,986/248,990.34 = 47,648.24/x
  3. Step 3: Cross multiply
    165,986x = 248,990.34 × 47,648.24
  4. Step 4: Simplify right side
    165,986x = 11,863,951,478.00
  5. Step 5: Solve for x
    x = 11,863,951,478.00/165,986
  6. Step 6: Final answer
    x = 71,475.62

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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.