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Finding the Third Proportional to 265,572 and 406,438

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Solution

The third proportional to 265,572 and 406,438 is: 622,022.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,572 : 406,438 = 406,438 : x
  2. Step 2: Convert to fraction form
    265,572/406,438 = 406,438/x
  3. Step 3: Cross multiply
    265,572x = 406,438 × 406,438
  4. Step 4: Simplify right side
    265,572x = 165,191,847,844
  5. Step 5: Solve for x
    x = 165,191,847,844/265,572
  6. Step 6: Final answer
    x = 622,022.83

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.