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Finding the Third Proportional to 916.44 and 1,974.63

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Solution

The third proportional to 916.44 and 1,974.63 is: 4,254.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    916.44 : 1,974.63 = 1,974.63 : x
  2. Step 2: Convert to fraction form
    916.44/1,974.63 = 1,974.63/x
  3. Step 3: Cross multiply
    916.44x = 1,974.63 × 1,974.63
  4. Step 4: Simplify right side
    916.44x = 3,899,143.89
  5. Step 5: Solve for x
    x = 3,899,143.89/916.44
  6. Step 6: Final answer
    x = 4,254.68

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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.