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Finding the Fourth Proportional to 20,571,706.20, 30,857,559.30 and 20,571,706.20

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Solution

The fourth proportional to 20,571,706.20, 30,857,559.30 and 20,571,706.20 is: 30,857,559.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571,706.20 : 30,857,559.30 = 20,571,706.20 : x
  2. Step 2: Convert to fraction form
    20,571,706.20/30,857,559.30 = 20,571,706.20/x
  3. Step 3: Cross multiply
    20,571,706.20x = 30,857,559.30 × 20,571,706.20
  4. Step 4: Simplify right side
    20,571,706.20x = 634,792,643,968,677.62
  5. Step 5: Solve for x
    x = 634,792,643,968,677.62/20,571,706.20
  6. Step 6: Final answer
    x = 30,857,559.30

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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.