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Finding the Third Proportional to 74,700 and 161,958

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Solution

The third proportional to 74,700 and 161,958 is: 351,143.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,700 : 161,958 = 161,958 : x
  2. Step 2: Convert to fraction form
    74,700/161,958 = 161,958/x
  3. Step 3: Cross multiply
    74,700x = 161,958 × 161,958
  4. Step 4: Simplify right side
    74,700x = 26,230,393,764
  5. Step 5: Solve for x
    x = 26,230,393,764/74,700
  6. Step 6: Final answer
    x = 351,143.16

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.