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Finding the Fourth Proportional to 168,761.70, 253,142.55 and 109,664.10

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Solution

The fourth proportional to 168,761.70, 253,142.55 and 109,664.10 is: 164,496.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,761.70 : 253,142.55 = 109,664.10 : x
  2. Step 2: Convert to fraction form
    168,761.70/253,142.55 = 109,664.10/x
  3. Step 3: Cross multiply
    168,761.70x = 253,142.55 × 109,664.10
  4. Step 4: Simplify right side
    168,761.70x = 27,760,649,917.46
  5. Step 5: Solve for x
    x = 27,760,649,917.46/168,761.70
  6. Step 6: Final answer
    x = 164,496.15

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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.