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Finding the Third Proportional to 1,122.19 and 1,606.31

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Solution

The third proportional to 1,122.19 and 1,606.31 is: 2,299.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122.19 : 1,606.31 = 1,606.31 : x
  2. Step 2: Convert to fraction form
    1,122.19/1,606.31 = 1,606.31/x
  3. Step 3: Cross multiply
    1,122.19x = 1,606.31 × 1,606.31
  4. Step 4: Simplify right side
    1,122.19x = 2,580,239.85
  5. Step 5: Solve for x
    x = 2,580,239.85/1,122.19
  6. Step 6: Final answer
    x = 2,299.29

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.