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Finding the Third Proportional to 30,792 and 46,120

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Solution

The third proportional to 30,792 and 46,120 is: 69,078.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,792 : 46,120 = 46,120 : x
  2. Step 2: Convert to fraction form
    30,792/46,120 = 46,120/x
  3. Step 3: Cross multiply
    30,792x = 46,120 × 46,120
  4. Step 4: Simplify right side
    30,792x = 2,127,054,400
  5. Step 5: Solve for x
    x = 2,127,054,400/30,792
  6. Step 6: Final answer
    x = 69,078.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.