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Finding the Third Proportional to 924.50 and 1,979

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Solution

The third proportional to 924.50 and 1,979 is: 4,236.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    924.50 : 1,979 = 1,979 : x
  2. Step 2: Convert to fraction form
    924.50/1,979 = 1,979/x
  3. Step 3: Cross multiply
    924.50x = 1,979 × 1,979
  4. Step 4: Simplify right side
    924.50x = 3,916,441
  5. Step 5: Solve for x
    x = 3,916,441/924.50
  6. Step 6: Final answer
    x = 4,236.28

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.