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Finding the Fourth Proportional to 687,994,034.20, 965,912,625.80 and 687,994,034.20

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Solution

The fourth proportional to 687,994,034.20, 965,912,625.80 and 687,994,034.20 is: 965,912,625.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,994,034.20 : 965,912,625.80 = 687,994,034.20 : x
  2. Step 2: Convert to fraction form
    687,994,034.20/965,912,625.80 = 687,994,034.20/x
  3. Step 3: Cross multiply
    687,994,034.20x = 965,912,625.80 × 687,994,034.20
  4. Step 4: Simplify right side
    687,994,034.20x = 664,542,124,108,856,960
  5. Step 5: Solve for x
    x = 664,542,124,108,856,960/687,994,034.20
  6. Step 6: Final answer
    x = 965,912,625.80

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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.