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Finding the Fourth Proportional to 217,634.80, 327,181.20 and 188,766.40

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Solution

The fourth proportional to 217,634.80, 327,181.20 and 188,766.40 is: 283,781.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,634.80 : 327,181.20 = 188,766.40 : x
  2. Step 2: Convert to fraction form
    217,634.80/327,181.20 = 188,766.40/x
  3. Step 3: Cross multiply
    217,634.80x = 327,181.20 × 188,766.40
  4. Step 4: Simplify right side
    217,634.80x = 61,760,817,271.68
  5. Step 5: Solve for x
    x = 61,760,817,271.68/217,634.80
  6. Step 6: Final answer
    x = 283,781.90

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1.5x scale

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.