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Finding the Third Proportional to 30,421 and 44,580

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Solution

The third proportional to 30,421 and 44,580 is: 65,329.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,421 : 44,580 = 44,580 : x
  2. Step 2: Convert to fraction form
    30,421/44,580 = 44,580/x
  3. Step 3: Cross multiply
    30,421x = 44,580 × 44,580
  4. Step 4: Simplify right side
    30,421x = 1,987,376,400
  5. Step 5: Solve for x
    x = 1,987,376,400/30,421
  6. Step 6: Final answer
    x = 65,329.10

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.