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Finding the Third Proportional to 46,942 and 70,420

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Solution

The third proportional to 46,942 and 70,420 is: 105,640.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,942 : 70,420 = 70,420 : x
  2. Step 2: Convert to fraction form
    46,942/70,420 = 70,420/x
  3. Step 3: Cross multiply
    46,942x = 70,420 × 70,420
  4. Step 4: Simplify right side
    46,942x = 4,958,976,400
  5. Step 5: Solve for x
    x = 4,958,976,400/46,942
  6. Step 6: Final answer
    x = 105,640.50

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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.