Home / 128,606,491,321.29-177,477,105,160.76-71,512,575,993.49

Finding the Fourth Proportional to 128,606,491,321.29, 177,477,105,160.76 and 71,512,575,993.49

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Solution

The fourth proportional to 128,606,491,321.29, 177,477,105,160.76 and 71,512,575,993.49 is: 98,687,436,687.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,606,491,321.29 : 177,477,105,160.76 = 71,512,575,993.49 : x
  2. Step 2: Convert to fraction form
    128,606,491,321.29/177,477,105,160.76 = 71,512,575,993.49/x
  3. Step 3: Cross multiply
    128,606,491,321.29x = 177,477,105,160.76 × 71,512,575,993.49
  4. Step 4: Simplify right side
    128,606,491,321.29x = 12,691,844,969,914,177,683,456
  5. Step 5: Solve for x
    x = 12,691,844,969,914,177,683,456/128,606,491,321.29
  6. Step 6: Final answer
    x = 98,687,436,687.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.