Home / 128,414,976,012.60-192,622,464,018.90-83,784,135,679.80

Finding the Fourth Proportional to 128,414,976,012.60, 192,622,464,018.90 and 83,784,135,679.80

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Solution

The fourth proportional to 128,414,976,012.60, 192,622,464,018.90 and 83,784,135,679.80 is: 125,676,203,519.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,414,976,012.60 : 192,622,464,018.90 = 83,784,135,679.80 : x
  2. Step 2: Convert to fraction form
    128,414,976,012.60/192,622,464,018.90 = 83,784,135,679.80/x
  3. Step 3: Cross multiply
    128,414,976,012.60x = 192,622,464,018.90 × 83,784,135,679.80
  4. Step 4: Simplify right side
    128,414,976,012.60x = 16,138,706,660,336,911,515,648
  5. Step 5: Solve for x
    x = 16,138,706,660,336,911,515,648/128,414,976,012.60
  6. Step 6: Final answer
    x = 125,676,203,519.70

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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.