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Finding the Third Proportional to 643,317 and 946,260

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Solution

The third proportional to 643,317 and 946,260 is: 1,391,861.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,317 : 946,260 = 946,260 : x
  2. Step 2: Convert to fraction form
    643,317/946,260 = 946,260/x
  3. Step 3: Cross multiply
    643,317x = 946,260 × 946,260
  4. Step 4: Simplify right side
    643,317x = 895,407,987,600
  5. Step 5: Solve for x
    x = 895,407,987,600/643,317
  6. Step 6: Final answer
    x = 1,391,861.22

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.