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Finding the Third Proportional to 427,819 and 910,693

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Solution

The third proportional to 427,819 and 910,693 is: 1,938,580.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,819 : 910,693 = 910,693 : x
  2. Step 2: Convert to fraction form
    427,819/910,693 = 910,693/x
  3. Step 3: Cross multiply
    427,819x = 910,693 × 910,693
  4. Step 4: Simplify right side
    427,819x = 829,361,740,249
  5. Step 5: Solve for x
    x = 829,361,740,249/427,819
  6. Step 6: Final answer
    x = 1,938,580.90

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.