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Finding the Third Proportional to 1,277,439.75 and 2,781,679.50

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Solution

The third proportional to 1,277,439.75 and 2,781,679.50 is: 6,057,225.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,439.75 : 2,781,679.50 = 2,781,679.50 : x
  2. Step 2: Convert to fraction form
    1,277,439.75/2,781,679.50 = 2,781,679.50/x
  3. Step 3: Cross multiply
    1,277,439.75x = 2,781,679.50 × 2,781,679.50
  4. Step 4: Simplify right side
    1,277,439.75x = 7,737,740,840,720.25
  5. Step 5: Solve for x
    x = 7,737,740,840,720.25/1,277,439.75
  6. Step 6: Final answer
    x = 6,057,225.67

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.