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Finding the Fourth Proportional to 211,608.17, 317,245.25 and 104,918.56

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Solution

The fourth proportional to 211,608.17, 317,245.25 and 104,918.56 is: 157,295.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,608.17 : 317,245.25 = 104,918.56 : x
  2. Step 2: Convert to fraction form
    211,608.17/317,245.25 = 104,918.56/x
  3. Step 3: Cross multiply
    211,608.17x = 317,245.25 × 104,918.56
  4. Step 4: Simplify right side
    211,608.17x = 33,284,914,266.02
  5. Step 5: Solve for x
    x = 33,284,914,266.02/211,608.17
  6. Step 6: Final answer
    x = 157,295.03

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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.