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Finding the Third Proportional to 30,730 and 46,311

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Solution

The third proportional to 30,730 and 46,311 is: 69,792.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,730 : 46,311 = 46,311 : x
  2. Step 2: Convert to fraction form
    30,730/46,311 = 46,311/x
  3. Step 3: Cross multiply
    30,730x = 46,311 × 46,311
  4. Step 4: Simplify right side
    30,730x = 2,144,708,721
  5. Step 5: Solve for x
    x = 2,144,708,721/30,730
  6. Step 6: Final answer
    x = 69,792.02

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.