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Finding the Fourth Proportional to 117,359.28, 161,938.44 and 66,358.44

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Solution

The fourth proportional to 117,359.28, 161,938.44 and 66,358.44 is: 91,564.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,359.28 : 161,938.44 = 66,358.44 : x
  2. Step 2: Convert to fraction form
    117,359.28/161,938.44 = 66,358.44/x
  3. Step 3: Cross multiply
    117,359.28x = 161,938.44 × 66,358.44
  4. Step 4: Simplify right side
    117,359.28x = 10,745,982,254.43
  5. Step 5: Solve for x
    x = 10,745,982,254.43/117,359.28
  6. Step 6: Final answer
    x = 91,564.83

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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.