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Finding the Fourth Proportional to 173,161.20, 259,741.80 and 137,731.80

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Solution

The fourth proportional to 173,161.20, 259,741.80 and 137,731.80 is: 206,597.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,161.20 : 259,741.80 = 137,731.80 : x
  2. Step 2: Convert to fraction form
    173,161.20/259,741.80 = 137,731.80/x
  3. Step 3: Cross multiply
    173,161.20x = 259,741.80 × 137,731.80
  4. Step 4: Simplify right side
    173,161.20x = 35,774,705,649.24
  5. Step 5: Solve for x
    x = 35,774,705,649.24/173,161.20
  6. Step 6: Final answer
    x = 206,597.70

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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.