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Finding the Fourth Proportional to 172,889.18, 259,207.80 and 116,589.43

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Solution

The fourth proportional to 172,889.18, 259,207.80 and 116,589.43 is: 174,799.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,889.18 : 259,207.80 = 116,589.43 : x
  2. Step 2: Convert to fraction form
    172,889.18/259,207.80 = 116,589.43/x
  3. Step 3: Cross multiply
    172,889.18x = 259,207.80 × 116,589.43
  4. Step 4: Simplify right side
    172,889.18x = 30,220,888,082.31
  5. Step 5: Solve for x
    x = 30,220,888,082.31/172,889.18
  6. Step 6: Final answer
    x = 174,799.18

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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.