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Finding the Fourth Proportional to 104,649.62, 144,413.42 and 59,331.78

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Solution

The fourth proportional to 104,649.62, 144,413.42 and 59,331.78 is: 81,876.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,649.62 : 144,413.42 = 59,331.78 : x
  2. Step 2: Convert to fraction form
    104,649.62/144,413.42 = 59,331.78/x
  3. Step 3: Cross multiply
    104,649.62x = 144,413.42 × 59,331.78
  4. Step 4: Simplify right side
    104,649.62x = 8,568,304,967.83
  5. Step 5: Solve for x
    x = 8,568,304,967.83/104,649.62
  6. Step 6: Final answer
    x = 81,876.13

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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.