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Finding the Third Proportional to 46,420 and 80,930

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Solution

The third proportional to 46,420 and 80,930 is: 141,095.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,420 : 80,930 = 80,930 : x
  2. Step 2: Convert to fraction form
    46,420/80,930 = 80,930/x
  3. Step 3: Cross multiply
    46,420x = 80,930 × 80,930
  4. Step 4: Simplify right side
    46,420x = 6,549,664,900
  5. Step 5: Solve for x
    x = 6,549,664,900/46,420
  6. Step 6: Final answer
    x = 141,095.75

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Why These Related Problems?

These problems maintain the same ratio (1.74) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.