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Finding the Fourth Proportional to 118,992.49, 164,197.47 and 71,244.61

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Solution

The fourth proportional to 118,992.49, 164,197.47 and 71,244.61 is: 98,310.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,992.49 : 164,197.47 = 71,244.61 : x
  2. Step 2: Convert to fraction form
    118,992.49/164,197.47 = 71,244.61/x
  3. Step 3: Cross multiply
    118,992.49x = 164,197.47 × 71,244.61
  4. Step 4: Simplify right side
    118,992.49x = 11,698,184,713.14
  5. Step 5: Solve for x
    x = 11,698,184,713.14/118,992.49
  6. Step 6: Final answer
    x = 98,310.28

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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.