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Finding the Third Proportional to 643,386,256.88 and 994,195,825.88

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Solution

The third proportional to 643,386,256.88 and 994,195,825.88 is: 1,536,286,063.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,386,256.88 : 994,195,825.88 = 994,195,825.88 : x
  2. Step 2: Convert to fraction form
    643,386,256.88/994,195,825.88 = 994,195,825.88/x
  3. Step 3: Cross multiply
    643,386,256.88x = 994,195,825.88 × 994,195,825.88
  4. Step 4: Simplify right side
    643,386,256.88x = 988,425,340,187,273,344
  5. Step 5: Solve for x
    x = 988,425,340,187,273,344/643,386,256.88
  6. Step 6: Final answer
    x = 1,536,286,063.97

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.