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Finding the Third Proportional to 398,191.50 and 859,777.50

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Solution

The third proportional to 398,191.50 and 859,777.50 is: 1,856,436.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,191.50 : 859,777.50 = 859,777.50 : x
  2. Step 2: Convert to fraction form
    398,191.50/859,777.50 = 859,777.50/x
  3. Step 3: Cross multiply
    398,191.50x = 859,777.50 × 859,777.50
  4. Step 4: Simplify right side
    398,191.50x = 739,217,349,506.25
  5. Step 5: Solve for x
    x = 739,217,349,506.25/398,191.50
  6. Step 6: Final answer
    x = 1,856,436.79

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.