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Finding the Fourth Proportional to 165,712.70, 248,601.45 and 65,855.90

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Solution

The fourth proportional to 165,712.70, 248,601.45 and 65,855.90 is: 98,796.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,712.70 : 248,601.45 = 65,855.90 : x
  2. Step 2: Convert to fraction form
    165,712.70/248,601.45 = 65,855.90/x
  3. Step 3: Cross multiply
    165,712.70x = 248,601.45 × 65,855.90
  4. Step 4: Simplify right side
    165,712.70x = 16,371,872,231.06
  5. Step 5: Solve for x
    x = 16,371,872,231.06/165,712.70
  6. Step 6: Final answer
    x = 98,796.73

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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.