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Finding the Fourth Proportional to 118,195.50, 163,109.79 and 67,894.50

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Solution

The fourth proportional to 118,195.50, 163,109.79 and 67,894.50 is: 93,694.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,195.50 : 163,109.79 = 67,894.50 : x
  2. Step 2: Convert to fraction form
    118,195.50/163,109.79 = 67,894.50/x
  3. Step 3: Cross multiply
    118,195.50x = 163,109.79 × 67,894.50
  4. Step 4: Simplify right side
    118,195.50x = 11,074,257,637.16
  5. Step 5: Solve for x
    x = 11,074,257,637.16/118,195.50
  6. Step 6: Final answer
    x = 93,694.41

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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.