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Finding the Fourth Proportional to 117,372.74, 161,949.44 and 69,641.60

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Solution

The fourth proportional to 117,372.74, 161,949.44 and 69,641.60 is: 96,090.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,372.74 : 161,949.44 = 69,641.60 : x
  2. Step 2: Convert to fraction form
    117,372.74/161,949.44 = 69,641.60/x
  3. Step 3: Cross multiply
    117,372.74x = 161,949.44 × 69,641.60
  4. Step 4: Simplify right side
    117,372.74x = 11,278,417,485.06
  5. Step 5: Solve for x
    x = 11,278,417,485.06/117,372.74
  6. Step 6: Final answer
    x = 96,090.61

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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.