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Finding the Third Proportional to 231,666.75 and 424,890

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Solution

The third proportional to 231,666.75 and 424,890 is: 779,272.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,666.75 : 424,890 = 424,890 : x
  2. Step 2: Convert to fraction form
    231,666.75/424,890 = 424,890/x
  3. Step 3: Cross multiply
    231,666.75x = 424,890 × 424,890
  4. Step 4: Simplify right side
    231,666.75x = 180,531,512,100
  5. Step 5: Solve for x
    x = 180,531,512,100/231,666.75
  6. Step 6: Final answer
    x = 779,272.43

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Why These Related Problems?

These problems maintain the same ratio (1.83) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.