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Finding the Third Proportional to 1,919,878.45 and 4,124,672.51

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Solution

The third proportional to 1,919,878.45 and 4,124,672.51 is: 8,861,458.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919,878.45 : 4,124,672.51 = 4,124,672.51 : x
  2. Step 2: Convert to fraction form
    1,919,878.45/4,124,672.51 = 4,124,672.51/x
  3. Step 3: Cross multiply
    1,919,878.45x = 4,124,672.51 × 4,124,672.51
  4. Step 4: Simplify right side
    1,919,878.45x = 17,012,923,296,703.43
  5. Step 5: Solve for x
    x = 17,012,923,296,703.43/1,919,878.45
  6. Step 6: Final answer
    x = 8,861,458.53

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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.