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Finding the Fourth Proportional to 118,961.80, 164,220.08 and 75,997.80

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Solution

The fourth proportional to 118,961.80, 164,220.08 and 75,997.80 is: 104,910.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,961.80 : 164,220.08 = 75,997.80 : x
  2. Step 2: Convert to fraction form
    118,961.80/164,220.08 = 75,997.80/x
  3. Step 3: Cross multiply
    118,961.80x = 164,220.08 × 75,997.80
  4. Step 4: Simplify right side
    118,961.80x = 12,480,364,795.82
  5. Step 5: Solve for x
    x = 12,480,364,795.82/118,961.80
  6. Step 6: Final answer
    x = 104,910.69

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1.5x scale

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.