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Finding the Fourth Proportional to 169,633.82, 254,063.16 and 80,949.60

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Solution

The fourth proportional to 169,633.82, 254,063.16 and 80,949.60 is: 121,239.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,633.82 : 254,063.16 = 80,949.60 : x
  2. Step 2: Convert to fraction form
    169,633.82/254,063.16 = 80,949.60/x
  3. Step 3: Cross multiply
    169,633.82x = 254,063.16 × 80,949.60
  4. Step 4: Simplify right side
    169,633.82x = 20,566,311,176.74
  5. Step 5: Solve for x
    x = 20,566,311,176.74/169,633.82
  6. Step 6: Final answer
    x = 121,239.45

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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.