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Finding the Fourth Proportional to 809,713,982.80, 1,214,570,974.20 and 809,713,982.80

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Solution

The fourth proportional to 809,713,982.80, 1,214,570,974.20 and 809,713,982.80 is: 1,214,570,974.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,713,982.80 : 1,214,570,974.20 = 809,713,982.80 : x
  2. Step 2: Convert to fraction form
    809,713,982.80/1,214,570,974.20 = 809,713,982.80/x
  3. Step 3: Cross multiply
    809,713,982.80x = 1,214,570,974.20 × 809,713,982.80
  4. Step 4: Simplify right side
    809,713,982.80x = 983,455,100,912,758,016
  5. Step 5: Solve for x
    x = 983,455,100,912,758,016/809,713,982.80
  6. Step 6: Final answer
    x = 1,214,570,974.20

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Double scale
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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.