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Finding the Third Proportional to 1,391,878.50 and 2,911,018.50

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Solution

The third proportional to 1,391,878.50 and 2,911,018.50 is: 6,088,195.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,878.50 : 2,911,018.50 = 2,911,018.50 : x
  2. Step 2: Convert to fraction form
    1,391,878.50/2,911,018.50 = 2,911,018.50/x
  3. Step 3: Cross multiply
    1,391,878.50x = 2,911,018.50 × 2,911,018.50
  4. Step 4: Simplify right side
    1,391,878.50x = 8,474,028,707,342.25
  5. Step 5: Solve for x
    x = 8,474,028,707,342.25/1,391,878.50
  6. Step 6: Final answer
    x = 6,088,195.71

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.