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Finding the Third Proportional to 97,407 and 209,988

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Solution

The third proportional to 97,407 and 209,988 is: 452,687.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,407 : 209,988 = 209,988 : x
  2. Step 2: Convert to fraction form
    97,407/209,988 = 209,988/x
  3. Step 3: Cross multiply
    97,407x = 209,988 × 209,988
  4. Step 4: Simplify right side
    97,407x = 44,094,960,144
  5. Step 5: Solve for x
    x = 44,094,960,144/97,407
  6. Step 6: Final answer
    x = 452,687.80

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.