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Finding the Fourth Proportional to 121,564.94, 167,768.07 and 67,860.44

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Solution

The fourth proportional to 121,564.94, 167,768.07 and 67,860.44 is: 93,652.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,564.94 : 167,768.07 = 67,860.44 : x
  2. Step 2: Convert to fraction form
    121,564.94/167,768.07 = 67,860.44/x
  3. Step 3: Cross multiply
    121,564.94x = 167,768.07 × 67,860.44
  4. Step 4: Simplify right side
    121,564.94x = 11,384,815,048.15
  5. Step 5: Solve for x
    x = 11,384,815,048.15/121,564.94
  6. Step 6: Final answer
    x = 93,652.13

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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.