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Finding the Third Proportional to 30,120 and 46,849

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Solution

The third proportional to 30,120 and 46,849 is: 72,869.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,120 : 46,849 = 46,849 : x
  2. Step 2: Convert to fraction form
    30,120/46,849 = 46,849/x
  3. Step 3: Cross multiply
    30,120x = 46,849 × 46,849
  4. Step 4: Simplify right side
    30,120x = 2,194,828,801
  5. Step 5: Solve for x
    x = 2,194,828,801/30,120
  6. Step 6: Final answer
    x = 72,869.48

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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.