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Finding the Fourth Proportional to 118,323, 163,286.46 and 68,022.36

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Solution

The fourth proportional to 118,323, 163,286.46 and 68,022.36 is: 93,871.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,323 : 163,286.46 = 68,022.36 : x
  2. Step 2: Convert to fraction form
    118,323/163,286.46 = 68,022.36/x
  3. Step 3: Cross multiply
    118,323x = 163,286.46 × 68,022.36
  4. Step 4: Simplify right side
    118,323x = 11,107,130,365.25
  5. Step 5: Solve for x
    x = 11,107,130,365.25/118,323
  6. Step 6: Final answer
    x = 93,871.27

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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.