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Finding the Fourth Proportional to 106,865.40, 160,413.30 and 60,209.40

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Solution

The fourth proportional to 106,865.40, 160,413.30 and 60,209.40 is: 90,379.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,865.40 : 160,413.30 = 60,209.40 : x
  2. Step 2: Convert to fraction form
    106,865.40/160,413.30 = 60,209.40/x
  3. Step 3: Cross multiply
    106,865.40x = 160,413.30 × 60,209.40
  4. Step 4: Simplify right side
    106,865.40x = 9,658,388,545.02
  5. Step 5: Solve for x
    x = 9,658,388,545.02/106,865.40
  6. Step 6: Final answer
    x = 90,379.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.