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Finding the Third Proportional to 158,366,921 and 331,213,402

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Solution

The third proportional to 158,366,921 and 331,213,402 is: 692,709,796.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,366,921 : 331,213,402 = 331,213,402 : x
  2. Step 2: Convert to fraction form
    158,366,921/331,213,402 = 331,213,402/x
  3. Step 3: Cross multiply
    158,366,921x = 331,213,402 × 331,213,402
  4. Step 4: Simplify right side
    158,366,921x = 109,702,317,664,413,600
  5. Step 5: Solve for x
    x = 109,702,317,664,413,600/158,366,921
  6. Step 6: Final answer
    x = 692,709,796.79

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.