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Finding the Fourth Proportional to 126,728,015.80, 190,092,023.70 and 126,728,015.80

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Solution

The fourth proportional to 126,728,015.80, 190,092,023.70 and 126,728,015.80 is: 190,092,023.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,728,015.80 : 190,092,023.70 = 126,728,015.80 : x
  2. Step 2: Convert to fraction form
    126,728,015.80/190,092,023.70 = 126,728,015.80/x
  3. Step 3: Cross multiply
    126,728,015.80x = 190,092,023.70 × 126,728,015.80
  4. Step 4: Simplify right side
    126,728,015.80x = 24,089,984,982,907,572
  5. Step 5: Solve for x
    x = 24,089,984,982,907,572/126,728,015.80
  6. Step 6: Final answer
    x = 190,092,023.70

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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.