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Finding the Fourth Proportional to 698,691,505.20, 1,046,021,718.60 and 698,691,505.20

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Solution

The fourth proportional to 698,691,505.20, 1,046,021,718.60 and 698,691,505.20 is: 1,046,021,718.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,691,505.20 : 1,046,021,718.60 = 698,691,505.20 : x
  2. Step 2: Convert to fraction form
    698,691,505.20/1,046,021,718.60 = 698,691,505.20/x
  3. Step 3: Cross multiply
    698,691,505.20x = 1,046,021,718.60 × 698,691,505.20
  4. Step 4: Simplify right side
    698,691,505.20x = 730,846,489,040,524,928
  5. Step 5: Solve for x
    x = 730,846,489,040,524,928/698,691,505.20
  6. Step 6: Final answer
    x = 1,046,021,718.60

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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.