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Finding the Fourth Proportional to 727,995,786.60, 1,091,993,679.90 and 727,995,786.60

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Solution

The fourth proportional to 727,995,786.60, 1,091,993,679.90 and 727,995,786.60 is: 1,091,993,679.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,995,786.60 : 1,091,993,679.90 = 727,995,786.60 : x
  2. Step 2: Convert to fraction form
    727,995,786.60/1,091,993,679.90 = 727,995,786.60/x
  3. Step 3: Cross multiply
    727,995,786.60x = 1,091,993,679.90 × 727,995,786.60
  4. Step 4: Simplify right side
    727,995,786.60x = 794,966,797,961,029,248
  5. Step 5: Solve for x
    x = 794,966,797,961,029,248/727,995,786.60
  6. Step 6: Final answer
    x = 1,091,993,679.90

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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.