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Finding the Fourth Proportional to 116,958.40, 161,393.28 and 65,954.77

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Solution

The fourth proportional to 116,958.40, 161,393.28 and 65,954.77 is: 91,012.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,958.40 : 161,393.28 = 65,954.77 : x
  2. Step 2: Convert to fraction form
    116,958.40/161,393.28 = 65,954.77/x
  3. Step 3: Cross multiply
    116,958.40x = 161,393.28 × 65,954.77
  4. Step 4: Simplify right side
    116,958.40x = 10,644,656,661.95
  5. Step 5: Solve for x
    x = 10,644,656,661.95/116,958.40
  6. Step 6: Final answer
    x = 91,012.33

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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.