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Finding the Fourth Proportional to 115,186.44, 158,965.26 and 69,866.33

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Solution

The fourth proportional to 115,186.44, 158,965.26 and 69,866.33 is: 96,420.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,186.44 : 158,965.26 = 69,866.33 : x
  2. Step 2: Convert to fraction form
    115,186.44/158,965.26 = 69,866.33/x
  3. Step 3: Cross multiply
    115,186.44x = 158,965.26 × 69,866.33
  4. Step 4: Simplify right side
    115,186.44x = 11,106,319,544.05
  5. Step 5: Solve for x
    x = 11,106,319,544.05/115,186.44
  6. Step 6: Final answer
    x = 96,420.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.