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Finding the Third Proportional to 18,816 and 26,320

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Solution

The third proportional to 18,816 and 26,320 is: 36,816.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,816 : 26,320 = 26,320 : x
  2. Step 2: Convert to fraction form
    18,816/26,320 = 26,320/x
  3. Step 3: Cross multiply
    18,816x = 26,320 × 26,320
  4. Step 4: Simplify right side
    18,816x = 692,742,400
  5. Step 5: Solve for x
    x = 692,742,400/18,816
  6. Step 6: Final answer
    x = 36,816.67

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.