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Finding the Fourth Proportional to 201,211.90, 301,817.85 and 82,843.90

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Solution

The fourth proportional to 201,211.90, 301,817.85 and 82,843.90 is: 124,265.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,211.90 : 301,817.85 = 82,843.90 : x
  2. Step 2: Convert to fraction form
    201,211.90/301,817.85 = 82,843.90/x
  3. Step 3: Cross multiply
    201,211.90x = 301,817.85 × 82,843.90
  4. Step 4: Simplify right side
    201,211.90x = 25,003,767,783.62
  5. Step 5: Solve for x
    x = 25,003,767,783.62/201,211.90
  6. Step 6: Final answer
    x = 124,265.85

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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.