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Finding the Fourth Proportional to 31,161.98, 43,004.55 and 17,015.90

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Solution

The fourth proportional to 31,161.98, 43,004.55 and 17,015.90 is: 23,482.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,161.98 : 43,004.55 = 17,015.90 : x
  2. Step 2: Convert to fraction form
    31,161.98/43,004.55 = 17,015.90/x
  3. Step 3: Cross multiply
    31,161.98x = 43,004.55 × 17,015.90
  4. Step 4: Simplify right side
    31,161.98x = 731,761,122.35
  5. Step 5: Solve for x
    x = 731,761,122.35/31,161.98
  6. Step 6: Final answer
    x = 23,482.50

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.