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Finding the Fourth Proportional to 336,992,258, 505,488,387 and 81,690,626

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Solution

The fourth proportional to 336,992,258, 505,488,387 and 81,690,626 is: 122,535,939

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,992,258 : 505,488,387 = 81,690,626 : x
  2. Step 2: Convert to fraction form
    336,992,258/505,488,387 = 81,690,626/x
  3. Step 3: Cross multiply
    336,992,258x = 505,488,387 × 81,690,626
  4. Step 4: Simplify right side
    336,992,258x = 41,293,662,769,760,264
  5. Step 5: Solve for x
    x = 41,293,662,769,760,264/336,992,258
  6. Step 6: Final answer
    x = 122,535,939

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.