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Finding the Third Proportional to 1,908,606,878 and 4,174,481,212

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Solution

The third proportional to 1,908,606,878 and 4,174,481,212 is: 9,130,373,357.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,908,606,878 : 4,174,481,212 = 4,174,481,212 : x
  2. Step 2: Convert to fraction form
    1,908,606,878/4,174,481,212 = 4,174,481,212/x
  3. Step 3: Cross multiply
    1,908,606,878x = 4,174,481,212 × 4,174,481,212
  4. Step 4: Simplify right side
    1,908,606,878x = 17,426,293,389,340,989,440
  5. Step 5: Solve for x
    x = 17,426,293,389,340,989,440/1,908,606,878
  6. Step 6: Final answer
    x = 9,130,373,357.77

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.