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Finding the Third Proportional to 12,486 and 19,332

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Solution

The third proportional to 12,486 and 19,332 is: 29,931.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,486 : 19,332 = 19,332 : x
  2. Step 2: Convert to fraction form
    12,486/19,332 = 19,332/x
  3. Step 3: Cross multiply
    12,486x = 19,332 × 19,332
  4. Step 4: Simplify right side
    12,486x = 373,726,224
  5. Step 5: Solve for x
    x = 373,726,224/12,486
  6. Step 6: Final answer
    x = 29,931.62

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.