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Finding the Fourth Proportional to 117,974.80, 162,735.58 and 83,480.68

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Solution

The fourth proportional to 117,974.80, 162,735.58 and 83,480.68 is: 115,154.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,974.80 : 162,735.58 = 83,480.68 : x
  2. Step 2: Convert to fraction form
    117,974.80/162,735.58 = 83,480.68/x
  3. Step 3: Cross multiply
    117,974.80x = 162,735.58 × 83,480.68
  4. Step 4: Simplify right side
    117,974.80x = 13,585,277,644.06
  5. Step 5: Solve for x
    x = 13,585,277,644.06/117,974.80
  6. Step 6: Final answer
    x = 115,154.06

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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.