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Finding the Third Proportional to 19,212 and 29,178

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Solution

The third proportional to 19,212 and 29,178 is: 44,313.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,212 : 29,178 = 29,178 : x
  2. Step 2: Convert to fraction form
    19,212/29,178 = 29,178/x
  3. Step 3: Cross multiply
    19,212x = 29,178 × 29,178
  4. Step 4: Simplify right side
    19,212x = 851,355,684
  5. Step 5: Solve for x
    x = 851,355,684/19,212
  6. Step 6: Final answer
    x = 44,313.75

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.