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Finding the Third Proportional to 7,712 and 16,190

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Solution

The third proportional to 7,712 and 16,190 is: 33,988.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,712 : 16,190 = 16,190 : x
  2. Step 2: Convert to fraction form
    7,712/16,190 = 16,190/x
  3. Step 3: Cross multiply
    7,712x = 16,190 × 16,190
  4. Step 4: Simplify right side
    7,712x = 262,116,100
  5. Step 5: Solve for x
    x = 262,116,100/7,712
  6. Step 6: Final answer
    x = 33,988.08

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.