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Finding the Fourth Proportional to 20,853,003,669.90, 31,279,505,504.85 and 20,853,003,669.90

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Solution

The fourth proportional to 20,853,003,669.90, 31,279,505,504.85 and 20,853,003,669.90 is: 31,279,505,504.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,853,003,669.90 : 31,279,505,504.85 = 20,853,003,669.90 : x
  2. Step 2: Convert to fraction form
    20,853,003,669.90/31,279,505,504.85 = 20,853,003,669.90/x
  3. Step 3: Cross multiply
    20,853,003,669.90x = 31,279,505,504.85 × 20,853,003,669.90
  4. Step 4: Simplify right side
    20,853,003,669.90x = 652,271,643,085,294,272,512
  5. Step 5: Solve for x
    x = 652,271,643,085,294,272,512/20,853,003,669.90
  6. Step 6: Final answer
    x = 31,279,505,504.85

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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.