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Finding the Third Proportional to 908 and 1,358.50

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Solution

The third proportional to 908 and 1,358.50 is: 2,032.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    908 : 1,358.50 = 1,358.50 : x
  2. Step 2: Convert to fraction form
    908/1,358.50 = 1,358.50/x
  3. Step 3: Cross multiply
    908x = 1,358.50 × 1,358.50
  4. Step 4: Simplify right side
    908x = 1,845,522.25
  5. Step 5: Solve for x
    x = 1,845,522.25/908
  6. Step 6: Final answer
    x = 2,032.51

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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.