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Finding the Fourth Proportional to 118,161.53, 163,076.91 and 67,181.95

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Solution

The fourth proportional to 118,161.53, 163,076.91 and 67,181.95 is: 92,719.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,161.53 : 163,076.91 = 67,181.95 : x
  2. Step 2: Convert to fraction form
    118,161.53/163,076.91 = 67,181.95/x
  3. Step 3: Cross multiply
    118,161.53x = 163,076.91 × 67,181.95
  4. Step 4: Simplify right side
    118,161.53x = 10,955,823,998.39
  5. Step 5: Solve for x
    x = 10,955,823,998.39/118,161.53
  6. Step 6: Final answer
    x = 92,719.04

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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.