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Finding the Third Proportional to 403,828,434 and 878,411,788

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Solution

The third proportional to 403,828,434 and 878,411,788 is: 1,910,730,410.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,828,434 : 878,411,788 = 878,411,788 : x
  2. Step 2: Convert to fraction form
    403,828,434/878,411,788 = 878,411,788/x
  3. Step 3: Cross multiply
    403,828,434x = 878,411,788 × 878,411,788
  4. Step 4: Simplify right side
    403,828,434x = 771,607,269,297,356,928
  5. Step 5: Solve for x
    x = 771,607,269,297,356,928/403,828,434
  6. Step 6: Final answer
    x = 1,910,730,410.08

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.