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Finding the Third Proportional to 46,512 and 74,880

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Solution

The third proportional to 46,512 and 74,880 is: 120,549.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,512 : 74,880 = 74,880 : x
  2. Step 2: Convert to fraction form
    46,512/74,880 = 74,880/x
  3. Step 3: Cross multiply
    46,512x = 74,880 × 74,880
  4. Step 4: Simplify right side
    46,512x = 5,607,014,400
  5. Step 5: Solve for x
    x = 5,607,014,400/46,512
  6. Step 6: Final answer
    x = 120,549.85

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.