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Finding the Fourth Proportional to 173,072.80, 259,627.43 and 71,859.36

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Solution

The fourth proportional to 173,072.80, 259,627.43 and 71,859.36 is: 107,796.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,072.80 : 259,627.43 = 71,859.36 : x
  2. Step 2: Convert to fraction form
    173,072.80/259,627.43 = 71,859.36/x
  3. Step 3: Cross multiply
    173,072.80x = 259,627.43 × 71,859.36
  4. Step 4: Simplify right side
    173,072.80x = 18,656,659,300.81
  5. Step 5: Solve for x
    x = 18,656,659,300.81/173,072.80
  6. Step 6: Final answer
    x = 107,796.60

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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.