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Finding the Third Proportional to 19,489.50 and 41,409

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Solution

The third proportional to 19,489.50 and 41,409 is: 87,980.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,489.50 : 41,409 = 41,409 : x
  2. Step 2: Convert to fraction form
    19,489.50/41,409 = 41,409/x
  3. Step 3: Cross multiply
    19,489.50x = 41,409 × 41,409
  4. Step 4: Simplify right side
    19,489.50x = 1,714,705,281
  5. Step 5: Solve for x
    x = 1,714,705,281/19,489.50
  6. Step 6: Final answer
    x = 87,980.98

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.