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Finding the Third Proportional to 1,378,929,788 and 2,195,210,554

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Solution

The third proportional to 1,378,929,788 and 2,195,210,554 is: 3,494,702,499.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,929,788 : 2,195,210,554 = 2,195,210,554 : x
  2. Step 2: Convert to fraction form
    1,378,929,788/2,195,210,554 = 2,195,210,554/x
  3. Step 3: Cross multiply
    1,378,929,788x = 2,195,210,554 × 2,195,210,554
  4. Step 4: Simplify right side
    1,378,929,788x = 4,818,949,376,392,986,624
  5. Step 5: Solve for x
    x = 4,818,949,376,392,986,624/1,378,929,788
  6. Step 6: Final answer
    x = 3,494,702,499.23

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.