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Finding the Third Proportional to 3,968,208.75 and 5,588,138.81

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Solution

The third proportional to 3,968,208.75 and 5,588,138.81 is: 7,869,368.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,968,208.75 : 5,588,138.81 = 5,588,138.81 : x
  2. Step 2: Convert to fraction form
    3,968,208.75/5,588,138.81 = 5,588,138.81/x
  3. Step 3: Cross multiply
    3,968,208.75x = 5,588,138.81 × 5,588,138.81
  4. Step 4: Simplify right side
    3,968,208.75x = 31,227,295,387,768.91
  5. Step 5: Solve for x
    x = 31,227,295,387,768.91/3,968,208.75
  6. Step 6: Final answer
    x = 7,869,368.11

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.