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Finding the Third Proportional to 129,043,555 and 197,268,389

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Solution

The third proportional to 129,043,555 and 197,268,389 is: 301,563,431.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,043,555 : 197,268,389 = 197,268,389 : x
  2. Step 2: Convert to fraction form
    129,043,555/197,268,389 = 197,268,389/x
  3. Step 3: Cross multiply
    129,043,555x = 197,268,389 × 197,268,389
  4. Step 4: Simplify right side
    129,043,555x = 38,914,817,298,655,320
  5. Step 5: Solve for x
    x = 38,914,817,298,655,320/129,043,555
  6. Step 6: Final answer
    x = 301,563,431.81

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.