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Finding the Fourth Proportional to 108,996.01, 150,413.16 and 61,257.43

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Solution

The fourth proportional to 108,996.01, 150,413.16 and 61,257.43 is: 84,534.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,996.01 : 150,413.16 = 61,257.43 : x
  2. Step 2: Convert to fraction form
    108,996.01/150,413.16 = 61,257.43/x
  3. Step 3: Cross multiply
    108,996.01x = 150,413.16 × 61,257.43
  4. Step 4: Simplify right side
    108,996.01x = 9,213,923,619.78
  5. Step 5: Solve for x
    x = 9,213,923,619.78/108,996.01
  6. Step 6: Final answer
    x = 84,534.50

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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.