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Finding the Fourth Proportional to 20,407,939,793.80, 30,563,536,749.90 and 20,407,939,793.80

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Solution

The fourth proportional to 20,407,939,793.80, 30,563,536,749.90 and 20,407,939,793.80 is: 30,563,536,749.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407,939,793.80 : 30,563,536,749.90 = 20,407,939,793.80 : x
  2. Step 2: Convert to fraction form
    20,407,939,793.80/30,563,536,749.90 = 20,407,939,793.80/x
  3. Step 3: Cross multiply
    20,407,939,793.80x = 30,563,536,749.90 × 20,407,939,793.80
  4. Step 4: Simplify right side
    20,407,939,793.80x = 623,738,817,877,552,922,624
  5. Step 5: Solve for x
    x = 623,738,817,877,552,922,624/20,407,939,793.80
  6. Step 6: Final answer
    x = 30,563,536,749.90

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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.