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Finding the Third Proportional to 211,842 and 330,264

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Solution

The third proportional to 211,842 and 330,264 is: 514,885.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,842 : 330,264 = 330,264 : x
  2. Step 2: Convert to fraction form
    211,842/330,264 = 330,264/x
  3. Step 3: Cross multiply
    211,842x = 330,264 × 330,264
  4. Step 4: Simplify right side
    211,842x = 109,074,309,696
  5. Step 5: Solve for x
    x = 109,074,309,696/211,842
  6. Step 6: Final answer
    x = 514,885.20

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.