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Finding the Third Proportional to 429.26 and 924.64

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Solution

The third proportional to 429.26 and 924.64 is: 1,991.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    429.26 : 924.64 = 924.64 : x
  2. Step 2: Convert to fraction form
    429.26/924.64 = 924.64/x
  3. Step 3: Cross multiply
    429.26x = 924.64 × 924.64
  4. Step 4: Simplify right side
    429.26x = 854,967.51
  5. Step 5: Solve for x
    x = 854,967.51/429.26
  6. Step 6: Final answer
    x = 1,991.73

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.