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Finding the Fourth Proportional to 118,794.48, 163,936.08 and 65,079.60

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Solution

The fourth proportional to 118,794.48, 163,936.08 and 65,079.60 is: 89,809.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,794.48 : 163,936.08 = 65,079.60 : x
  2. Step 2: Convert to fraction form
    118,794.48/163,936.08 = 65,079.60/x
  3. Step 3: Cross multiply
    118,794.48x = 163,936.08 × 65,079.60
  4. Step 4: Simplify right side
    118,794.48x = 10,668,894,511.97
  5. Step 5: Solve for x
    x = 10,668,894,511.97/118,794.48
  6. Step 6: Final answer
    x = 89,809.68

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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.