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Finding the Fourth Proportional to 126,993,323.80, 190,489,985.70 and 126,993,323.80

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Solution

The fourth proportional to 126,993,323.80, 190,489,985.70 and 126,993,323.80 is: 190,489,985.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,993,323.80 : 190,489,985.70 = 126,993,323.80 : x
  2. Step 2: Convert to fraction form
    126,993,323.80/190,489,985.70 = 126,993,323.80/x
  3. Step 3: Cross multiply
    126,993,323.80x = 190,489,985.70 × 126,993,323.80
  4. Step 4: Simplify right side
    126,993,323.80x = 24,190,956,434,657,468
  5. Step 5: Solve for x
    x = 24,190,956,434,657,468/126,993,323.80
  6. Step 6: Final answer
    x = 190,489,985.70

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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.