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Finding the Third Proportional to 189,860.25 and 417,616.50

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Solution

The third proportional to 189,860.25 and 417,616.50 is: 918,589.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,860.25 : 417,616.50 = 417,616.50 : x
  2. Step 2: Convert to fraction form
    189,860.25/417,616.50 = 417,616.50/x
  3. Step 3: Cross multiply
    189,860.25x = 417,616.50 × 417,616.50
  4. Step 4: Simplify right side
    189,860.25x = 174,403,541,072.25
  5. Step 5: Solve for x
    x = 174,403,541,072.25/189,860.25
  6. Step 6: Final answer
    x = 918,589.02

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Why These Related Problems?

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