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Finding the Fourth Proportional to 165,721.98, 248,615.46 and 65,863.56

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Solution

The fourth proportional to 165,721.98, 248,615.46 and 65,863.56 is: 98,808.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,721.98 : 248,615.46 = 65,863.56 : x
  2. Step 2: Convert to fraction form
    165,721.98/248,615.46 = 65,863.56/x
  3. Step 3: Cross multiply
    165,721.98x = 248,615.46 × 65,863.56
  4. Step 4: Simplify right side
    165,721.98x = 16,374,699,266.64
  5. Step 5: Solve for x
    x = 16,374,699,266.64/165,721.98
  6. Step 6: Final answer
    x = 98,808.25

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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.