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Finding the Fourth Proportional to 118,961.03, 164,172.23 and 65,251.04

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Solution

The fourth proportional to 118,961.03, 164,172.23 and 65,251.04 is: 90,049.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,961.03 : 164,172.23 = 65,251.04 : x
  2. Step 2: Convert to fraction form
    118,961.03/164,172.23 = 65,251.04/x
  3. Step 3: Cross multiply
    118,961.03x = 164,172.23 × 65,251.04
  4. Step 4: Simplify right side
    118,961.03x = 10,712,408,459.84
  5. Step 5: Solve for x
    x = 10,712,408,459.84/118,961.03
  6. Step 6: Final answer
    x = 90,049.73

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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.