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Finding the Fourth Proportional to 117,991.26, 162,686.80 and 96,401.32

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Solution

The fourth proportional to 117,991.26, 162,686.80 and 96,401.32 is: 132,918.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,991.26 : 162,686.80 = 96,401.32 : x
  2. Step 2: Convert to fraction form
    117,991.26/162,686.80 = 96,401.32/x
  3. Step 3: Cross multiply
    117,991.26x = 162,686.80 × 96,401.32
  4. Step 4: Simplify right side
    117,991.26x = 15,683,222,266.58
  5. Step 5: Solve for x
    x = 15,683,222,266.58/117,991.26
  6. Step 6: Final answer
    x = 132,918.51

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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.