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Finding the Third Proportional to 191,813 and 290,386

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Solution

The third proportional to 191,813 and 290,386 is: 439,615.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,813 : 290,386 = 290,386 : x
  2. Step 2: Convert to fraction form
    191,813/290,386 = 290,386/x
  3. Step 3: Cross multiply
    191,813x = 290,386 × 290,386
  4. Step 4: Simplify right side
    191,813x = 84,324,028,996
  5. Step 5: Solve for x
    x = 84,324,028,996/191,813
  6. Step 6: Final answer
    x = 439,615.82

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.