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Finding the Third Proportional to 409,582.13 and 641,103.75

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Solution

The third proportional to 409,582.13 and 641,103.75 is: 1,003,495.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,582.13 : 641,103.75 = 641,103.75 : x
  2. Step 2: Convert to fraction form
    409,582.13/641,103.75 = 641,103.75/x
  3. Step 3: Cross multiply
    409,582.13x = 641,103.75 × 641,103.75
  4. Step 4: Simplify right side
    409,582.13x = 411,014,018,264.06
  5. Step 5: Solve for x
    x = 411,014,018,264.06/409,582.13
  6. Step 6: Final answer
    x = 1,003,495.99

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These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.