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Finding the Third Proportional to 423,913.50 and 636,690.38

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Solution

The third proportional to 423,913.50 and 636,690.38 is: 956,267.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,913.50 : 636,690.38 = 636,690.38 : x
  2. Step 2: Convert to fraction form
    423,913.50/636,690.38 = 636,690.38/x
  3. Step 3: Cross multiply
    423,913.50x = 636,690.38 × 636,690.38
  4. Step 4: Simplify right side
    423,913.50x = 405,374,633,617.64
  5. Step 5: Solve for x
    x = 405,374,633,617.64/423,913.50
  6. Step 6: Final answer
    x = 956,267.34

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