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Finding the Fourth Proportional to 196,903.80, 294,918.30 and 161,911.80

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Solution

The fourth proportional to 196,903.80, 294,918.30 and 161,911.80 is: 242,508.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,903.80 : 294,918.30 = 161,911.80 : x
  2. Step 2: Convert to fraction form
    196,903.80/294,918.30 = 161,911.80/x
  3. Step 3: Cross multiply
    196,903.80x = 294,918.30 × 161,911.80
  4. Step 4: Simplify right side
    196,903.80x = 47,750,752,805.94
  5. Step 5: Solve for x
    x = 47,750,752,805.94/196,903.80
  6. Step 6: Final answer
    x = 242,508.03

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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.