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Finding the Third Proportional to 1,831,384.69 and 3,978,046.69

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Solution

The third proportional to 1,831,384.69 and 3,978,046.69 is: 8,640,923.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,831,384.69 : 3,978,046.69 = 3,978,046.69 : x
  2. Step 2: Convert to fraction form
    1,831,384.69/3,978,046.69 = 3,978,046.69/x
  3. Step 3: Cross multiply
    1,831,384.69x = 3,978,046.69 × 3,978,046.69
  4. Step 4: Simplify right side
    1,831,384.69x = 15,824,855,447,929.72
  5. Step 5: Solve for x
    x = 15,824,855,447,929.72/1,831,384.69
  6. Step 6: Final answer
    x = 8,640,923.75

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.