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Finding the Fourth Proportional to 297,949.78, 411,178.80 and 161,992.88

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Solution

The fourth proportional to 297,949.78, 411,178.80 and 161,992.88 is: 223,554.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,949.78 : 411,178.80 = 161,992.88 : x
  2. Step 2: Convert to fraction form
    297,949.78/411,178.80 = 161,992.88/x
  3. Step 3: Cross multiply
    297,949.78x = 411,178.80 × 161,992.88
  4. Step 4: Simplify right side
    297,949.78x = 66,608,038,006.94
  5. Step 5: Solve for x
    x = 66,608,038,006.94/297,949.78
  6. Step 6: Final answer
    x = 223,554.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.