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Finding the Fourth Proportional to 117,548.36, 162,327.44 and 81,836.02

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Solution

The fourth proportional to 117,548.36, 162,327.44 and 81,836.02 is: 113,010.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,548.36 : 162,327.44 = 81,836.02 : x
  2. Step 2: Convert to fraction form
    117,548.36/162,327.44 = 81,836.02/x
  3. Step 3: Cross multiply
    117,548.36x = 162,327.44 × 81,836.02
  4. Step 4: Simplify right side
    117,548.36x = 13,284,231,425.16
  5. Step 5: Solve for x
    x = 13,284,231,425.16/117,548.36
  6. Step 6: Final answer
    x = 113,010.78

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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.