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Finding the Fourth Proportional to 118,894.92, 164,048.04 and 80,659.68

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Solution

The fourth proportional to 118,894.92, 164,048.04 and 80,659.68 is: 111,292.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,894.92 : 164,048.04 = 80,659.68 : x
  2. Step 2: Convert to fraction form
    118,894.92/164,048.04 = 80,659.68/x
  3. Step 3: Cross multiply
    118,894.92x = 164,048.04 × 80,659.68
  4. Step 4: Simplify right side
    118,894.92x = 13,232,062,411.03
  5. Step 5: Solve for x
    x = 13,232,062,411.03/118,894.92
  6. Step 6: Final answer
    x = 111,292.08

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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.