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Finding the Third Proportional to 1,291,856.34 and 2,781,135

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Solution

The third proportional to 1,291,856.34 and 2,781,135 is: 5,987,284.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,856.34 : 2,781,135 = 2,781,135 : x
  2. Step 2: Convert to fraction form
    1,291,856.34/2,781,135 = 2,781,135/x
  3. Step 3: Cross multiply
    1,291,856.34x = 2,781,135 × 2,781,135
  4. Step 4: Simplify right side
    1,291,856.34x = 7,734,711,888,225
  5. Step 5: Solve for x
    x = 7,734,711,888,225/1,291,856.34
  6. Step 6: Final answer
    x = 5,987,284.83

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.