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Finding the Fourth Proportional to 121,677.76, 167,913.54 and 67,963.54

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Solution

The fourth proportional to 121,677.76, 167,913.54 and 67,963.54 is: 93,788.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,677.76 : 167,913.54 = 67,963.54 : x
  2. Step 2: Convert to fraction form
    121,677.76/167,913.54 = 67,963.54/x
  3. Step 3: Cross multiply
    121,677.76x = 167,913.54 × 67,963.54
  4. Step 4: Simplify right side
    121,677.76x = 11,411,998,592.33
  5. Step 5: Solve for x
    x = 11,411,998,592.33/121,677.76
  6. Step 6: Final answer
    x = 93,788.70

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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.