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Finding the Third Proportional to 709,721 and 1,556,843

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Solution

The third proportional to 709,721 and 1,556,843 is: 3,415,088.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,721 : 1,556,843 = 1,556,843 : x
  2. Step 2: Convert to fraction form
    709,721/1,556,843 = 1,556,843/x
  3. Step 3: Cross multiply
    709,721x = 1,556,843 × 1,556,843
  4. Step 4: Simplify right side
    709,721x = 2,423,760,126,649
  5. Step 5: Solve for x
    x = 2,423,760,126,649/709,721
  6. Step 6: Final answer
    x = 3,415,088.64

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.