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Finding the Third Proportional to 74,413.69 and 163,642.78

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Solution

The third proportional to 74,413.69 and 163,642.78 is: 359,866.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,413.69 : 163,642.78 = 163,642.78 : x
  2. Step 2: Convert to fraction form
    74,413.69/163,642.78 = 163,642.78/x
  3. Step 3: Cross multiply
    74,413.69x = 163,642.78 × 163,642.78
  4. Step 4: Simplify right side
    74,413.69x = 26,778,959,855.24
  5. Step 5: Solve for x
    x = 26,778,959,855.24/74,413.69
  6. Step 6: Final answer
    x = 359,866.05

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.