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Finding the Third Proportional to 206,421.19 and 427,000.50

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Solution

The third proportional to 206,421.19 and 427,000.50 is: 883,288.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,421.19 : 427,000.50 = 427,000.50 : x
  2. Step 2: Convert to fraction form
    206,421.19/427,000.50 = 427,000.50/x
  3. Step 3: Cross multiply
    206,421.19x = 427,000.50 × 427,000.50
  4. Step 4: Simplify right side
    206,421.19x = 182,329,427,000.25
  5. Step 5: Solve for x
    x = 182,329,427,000.25/206,421.19
  6. Step 6: Final answer
    x = 883,288.33

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.