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Finding the Third Proportional to 1,868,687.72 and 2,672,205.19

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Solution

The third proportional to 1,868,687.72 and 2,672,205.19 is: 3,821,227.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868,687.72 : 2,672,205.19 = 2,672,205.19 : x
  2. Step 2: Convert to fraction form
    1,868,687.72/2,672,205.19 = 2,672,205.19/x
  3. Step 3: Cross multiply
    1,868,687.72x = 2,672,205.19 × 2,672,205.19
  4. Step 4: Simplify right side
    1,868,687.72x = 7,140,680,564,101.91
  5. Step 5: Solve for x
    x = 7,140,680,564,101.91/1,868,687.72
  6. Step 6: Final answer
    x = 3,821,227.32

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.