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Finding the Fourth Proportional to 263,640.68, 363,830.78 and 161,722.34

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Solution

The fourth proportional to 263,640.68, 363,830.78 and 161,722.34 is: 223,180.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,640.68 : 363,830.78 = 161,722.34 : x
  2. Step 2: Convert to fraction form
    263,640.68/363,830.78 = 161,722.34/x
  3. Step 3: Cross multiply
    263,640.68x = 363,830.78 × 161,722.34
  4. Step 4: Simplify right side
    263,640.68x = 58,839,563,690.78
  5. Step 5: Solve for x
    x = 58,839,563,690.78/263,640.68
  6. Step 6: Final answer
    x = 223,180.90

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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.