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Finding the Fourth Proportional to 20,190,383,999.70, 30,285,575,999.55 and 20,190,383,999.70

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Solution

The fourth proportional to 20,190,383,999.70, 30,285,575,999.55 and 20,190,383,999.70 is: 30,285,575,999.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190,383,999.70 : 30,285,575,999.55 = 20,190,383,999.70 : x
  2. Step 2: Convert to fraction form
    20,190,383,999.70/30,285,575,999.55 = 20,190,383,999.70/x
  3. Step 3: Cross multiply
    20,190,383,999.70x = 30,285,575,999.55 × 20,190,383,999.70
  4. Step 4: Simplify right side
    20,190,383,999.70x = 611,477,409,083,012,677,632
  5. Step 5: Solve for x
    x = 611,477,409,083,012,677,632/20,190,383,999.70
  6. Step 6: Final answer
    x = 30,285,575,999.55

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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.