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Finding the Fourth Proportional to 125,998.88, 173,878.45 and 69,413.90

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Solution

The fourth proportional to 125,998.88, 173,878.45 and 69,413.90 is: 95,791.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,998.88 : 173,878.45 = 69,413.90 : x
  2. Step 2: Convert to fraction form
    125,998.88/173,878.45 = 69,413.90/x
  3. Step 3: Cross multiply
    125,998.88x = 173,878.45 × 69,413.90
  4. Step 4: Simplify right side
    125,998.88x = 12,069,580,297.53
  5. Step 5: Solve for x
    x = 12,069,580,297.53/125,998.88
  6. Step 6: Final answer
    x = 95,791.18

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1.5x scale

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.