Home / 128,672,868.06-177,570,356.22-69,935,515.56

Finding the Fourth Proportional to 128,672,868.06, 177,570,356.22 and 69,935,515.56

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Solution

The fourth proportional to 128,672,868.06, 177,570,356.22 and 69,935,515.56 is: 96,511,988.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,672,868.06 : 177,570,356.22 = 69,935,515.56 : x
  2. Step 2: Convert to fraction form
    128,672,868.06/177,570,356.22 = 69,935,515.56/x
  3. Step 3: Cross multiply
    128,672,868.06x = 177,570,356.22 × 69,935,515.56
  4. Step 4: Simplify right side
    128,672,868.06x = 12,418,474,410,418,554
  5. Step 5: Solve for x
    x = 12,418,474,410,418,554/128,672,868.06
  6. Step 6: Final answer
    x = 96,511,988.87

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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.