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Finding the Fourth Proportional to 125,698.05, 173,413.92 and 71,954.13

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Solution

The fourth proportional to 125,698.05, 173,413.92 and 71,954.13 is: 99,268.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,698.05 : 173,413.92 = 71,954.13 : x
  2. Step 2: Convert to fraction form
    125,698.05/173,413.92 = 71,954.13/x
  3. Step 3: Cross multiply
    125,698.05x = 173,413.92 × 71,954.13
  4. Step 4: Simplify right side
    125,698.05x = 12,477,847,743.49
  5. Step 5: Solve for x
    x = 12,477,847,743.49/125,698.05
  6. Step 6: Final answer
    x = 99,268.43

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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.