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Finding the Third Proportional to 906 and 1,359

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Solution

The third proportional to 906 and 1,359 is: 2,038.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    906 : 1,359 = 1,359 : x
  2. Step 2: Convert to fraction form
    906/1,359 = 1,359/x
  3. Step 3: Cross multiply
    906x = 1,359 × 1,359
  4. Step 4: Simplify right side
    906x = 1,846,881
  5. Step 5: Solve for x
    x = 1,846,881/906
  6. Step 6: Final answer
    x = 2,038.50

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Why These Related Problems?

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