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Finding the Third Proportional to 21,309 and 46,506

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Solution

The third proportional to 21,309 and 46,506 is: 101,497.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309 : 46,506 = 46,506 : x
  2. Step 2: Convert to fraction form
    21,309/46,506 = 46,506/x
  3. Step 3: Cross multiply
    21,309x = 46,506 × 46,506
  4. Step 4: Simplify right side
    21,309x = 2,162,808,036
  5. Step 5: Solve for x
    x = 2,162,808,036/21,309
  6. Step 6: Final answer
    x = 101,497.40

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.