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Finding the Fourth Proportional to 118,974.67, 164,189.64 and 65,261.95

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Solution

The fourth proportional to 118,974.67, 164,189.64 and 65,261.95 is: 90,064.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,974.67 : 164,189.64 = 65,261.95 : x
  2. Step 2: Convert to fraction form
    118,974.67/164,189.64 = 65,261.95/x
  3. Step 3: Cross multiply
    118,974.67x = 164,189.64 × 65,261.95
  4. Step 4: Simplify right side
    118,974.67x = 10,715,336,076.20
  5. Step 5: Solve for x
    x = 10,715,336,076.20/118,974.67
  6. Step 6: Final answer
    x = 90,064.01

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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.