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Finding the Third Proportional to 12,416 and 19,320

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Solution

The third proportional to 12,416 and 19,320 is: 30,063.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,416 : 19,320 = 19,320 : x
  2. Step 2: Convert to fraction form
    12,416/19,320 = 19,320/x
  3. Step 3: Cross multiply
    12,416x = 19,320 × 19,320
  4. Step 4: Simplify right side
    12,416x = 373,262,400
  5. Step 5: Solve for x
    x = 373,262,400/12,416
  6. Step 6: Final answer
    x = 30,063.02

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.