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Finding the Fourth Proportional to 436,211.78, 654,049.76 and 169,661.66

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Solution

The fourth proportional to 436,211.78, 654,049.76 and 169,661.66 is: 254,388.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,211.78 : 654,049.76 = 169,661.66 : x
  2. Step 2: Convert to fraction form
    436,211.78/654,049.76 = 169,661.66/x
  3. Step 3: Cross multiply
    436,211.78x = 654,049.76 × 169,661.66
  4. Step 4: Simplify right side
    436,211.78x = 110,967,163,885.65
  5. Step 5: Solve for x
    x = 110,967,163,885.65/436,211.78
  6. Step 6: Final answer
    x = 254,388.28

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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.