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Finding the Third Proportional to 28,672 and 63,360

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Solution

The third proportional to 28,672 and 63,360 is: 140,014.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,672 : 63,360 = 63,360 : x
  2. Step 2: Convert to fraction form
    28,672/63,360 = 63,360/x
  3. Step 3: Cross multiply
    28,672x = 63,360 × 63,360
  4. Step 4: Simplify right side
    28,672x = 4,014,489,600
  5. Step 5: Solve for x
    x = 4,014,489,600/28,672
  6. Step 6: Final answer
    x = 140,014.29

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.