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Finding the Fourth Proportional to 20,945,355,348.60, 31,418,033,022.90 and 20,945,355,348.60

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Solution

The fourth proportional to 20,945,355,348.60, 31,418,033,022.90 and 20,945,355,348.60 is: 31,418,033,022.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,945,355,348.60 : 31,418,033,022.90 = 20,945,355,348.60 : x
  2. Step 2: Convert to fraction form
    20,945,355,348.60/31,418,033,022.90 = 20,945,355,348.60/x
  3. Step 3: Cross multiply
    20,945,355,348.60x = 31,418,033,022.90 × 20,945,355,348.60
  4. Step 4: Simplify right side
    20,945,355,348.60x = 658,061,866,018,689,908,736
  5. Step 5: Solve for x
    x = 658,061,866,018,689,908,736/20,945,355,348.60
  6. Step 6: Final answer
    x = 31,418,033,022.90

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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.