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Finding the Third Proportional to 190,388.63 and 418,138.88

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Solution

The third proportional to 190,388.63 and 418,138.88 is: 918,332.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,388.63 : 418,138.88 = 418,138.88 : x
  2. Step 2: Convert to fraction form
    190,388.63/418,138.88 = 418,138.88/x
  3. Step 3: Cross multiply
    190,388.63x = 418,138.88 × 418,138.88
  4. Step 4: Simplify right side
    190,388.63x = 174,840,118,786.27
  5. Step 5: Solve for x
    x = 174,840,118,786.27/190,388.63
  6. Step 6: Final answer
    x = 918,332.80

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These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.