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Finding the Fourth Proportional to 118,294.78, 163,236.99 and 67,293.94

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Solution

The fourth proportional to 118,294.78, 163,236.99 and 67,293.94 is: 92,860.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,294.78 : 163,236.99 = 67,293.94 : x
  2. Step 2: Convert to fraction form
    118,294.78/163,236.99 = 67,293.94/x
  3. Step 3: Cross multiply
    118,294.78x = 163,236.99 × 67,293.94
  4. Step 4: Simplify right side
    118,294.78x = 10,984,860,210.84
  5. Step 5: Solve for x
    x = 10,984,860,210.84/118,294.78
  6. Step 6: Final answer
    x = 92,860.06

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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.