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Finding the Fourth Proportional to 201,003,137.80, 301,504,706.70 and 132,128,384.20

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Solution

The fourth proportional to 201,003,137.80, 301,504,706.70 and 132,128,384.20 is: 198,192,576.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,003,137.80 : 301,504,706.70 = 132,128,384.20 : x
  2. Step 2: Convert to fraction form
    201,003,137.80/301,504,706.70 = 132,128,384.20/x
  3. Step 3: Cross multiply
    201,003,137.80x = 301,504,706.70 × 132,128,384.20
  4. Step 4: Simplify right side
    201,003,137.80x = 39,837,329,724,965,912
  5. Step 5: Solve for x
    x = 39,837,329,724,965,912/201,003,137.80
  6. Step 6: Final answer
    x = 198,192,576.30

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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.