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Finding the Fourth Proportional to 126,413.91, 174,436.34 and 69,821.91

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Solution

The fourth proportional to 126,413.91, 174,436.34 and 69,821.91 is: 96,346.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,413.91 : 174,436.34 = 69,821.91 : x
  2. Step 2: Convert to fraction form
    126,413.91/174,436.34 = 69,821.91/x
  3. Step 3: Cross multiply
    126,413.91x = 174,436.34 × 69,821.91
  4. Step 4: Simplify right side
    126,413.91x = 12,179,478,083.10
  5. Step 5: Solve for x
    x = 12,179,478,083.10/126,413.91
  6. Step 6: Final answer
    x = 96,346.03

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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.