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Finding the Fourth Proportional to 3,669,288,099.40, 5,151,515,221.40 and 3,669,288,099.40

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Solution

The fourth proportional to 3,669,288,099.40, 5,151,515,221.40 and 3,669,288,099.40 is: 5,151,515,221.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,669,288,099.40 : 5,151,515,221.40 = 3,669,288,099.40 : x
  2. Step 2: Convert to fraction form
    3,669,288,099.40/5,151,515,221.40 = 3,669,288,099.40/x
  3. Step 3: Cross multiply
    3,669,288,099.40x = 5,151,515,221.40 × 3,669,288,099.40
  4. Step 4: Simplify right side
    3,669,288,099.40x = 18,902,393,495,760,973,824
  5. Step 5: Solve for x
    x = 18,902,393,495,760,973,824/3,669,288,099.40
  6. Step 6: Final answer
    x = 5,151,515,221.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.