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Finding the Fourth Proportional to 118,910.60, 164,095.16 and 65,195.66

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Solution

The fourth proportional to 118,910.60, 164,095.16 and 65,195.66 is: 89,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,910.60 : 164,095.16 = 65,195.66 : x
  2. Step 2: Convert to fraction form
    118,910.60/164,095.16 = 65,195.66/x
  3. Step 3: Cross multiply
    118,910.60x = 164,095.16 × 65,195.66
  4. Step 4: Simplify right side
    118,910.60x = 10,698,291,112.55
  5. Step 5: Solve for x
    x = 10,698,291,112.55/118,910.60
  6. Step 6: Final answer
    x = 89,969.20

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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.