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Finding the Fourth Proportional to 7,431,161.30, 10,391,028.70 and 7,431,161.30

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Solution

The fourth proportional to 7,431,161.30, 10,391,028.70 and 7,431,161.30 is: 10,391,028.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,431,161.30 : 10,391,028.70 = 7,431,161.30 : x
  2. Step 2: Convert to fraction form
    7,431,161.30/10,391,028.70 = 7,431,161.30/x
  3. Step 3: Cross multiply
    7,431,161.30x = 10,391,028.70 × 7,431,161.30
  4. Step 4: Simplify right side
    7,431,161.30x = 77,217,410,342,629.30
  5. Step 5: Solve for x
    x = 77,217,410,342,629.30/7,431,161.30
  6. Step 6: Final answer
    x = 10,391,028.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.