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Finding the Fourth Proportional to 117,076.56, 161,568.12 and 69,312.48

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Solution

The fourth proportional to 117,076.56, 161,568.12 and 69,312.48 is: 95,652.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,076.56 : 161,568.12 = 69,312.48 : x
  2. Step 2: Convert to fraction form
    117,076.56/161,568.12 = 69,312.48/x
  3. Step 3: Cross multiply
    117,076.56x = 161,568.12 × 69,312.48
  4. Step 4: Simplify right side
    117,076.56x = 11,198,687,086.14
  5. Step 5: Solve for x
    x = 11,198,687,086.14/117,076.56
  6. Step 6: Final answer
    x = 95,652.68

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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.