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Finding the Fourth Proportional to 121,315.49, 167,413.12 and 67,599.37

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Solution

The fourth proportional to 121,315.49, 167,413.12 and 67,599.37 is: 93,285.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,315.49 : 167,413.12 = 67,599.37 : x
  2. Step 2: Convert to fraction form
    121,315.49/167,413.12 = 67,599.37/x
  3. Step 3: Cross multiply
    121,315.49x = 167,413.12 × 67,599.37
  4. Step 4: Simplify right side
    121,315.49x = 11,317,020,854.20
  5. Step 5: Solve for x
    x = 11,317,020,854.20/121,315.49
  6. Step 6: Final answer
    x = 93,285.87

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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.