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Finding the Third Proportional to 556,556 and 839,999

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Solution

The third proportional to 556,556 and 839,999 is: 1,267,793.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,556 : 839,999 = 839,999 : x
  2. Step 2: Convert to fraction form
    556,556/839,999 = 839,999/x
  3. Step 3: Cross multiply
    556,556x = 839,999 × 839,999
  4. Step 4: Simplify right side
    556,556x = 705,598,320,001
  5. Step 5: Solve for x
    x = 705,598,320,001/556,556
  6. Step 6: Final answer
    x = 1,267,793.93

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.