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Finding the Third Proportional to 908.50 and 1,402

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Solution

The third proportional to 908.50 and 1,402 is: 2,163.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    908.50 : 1,402 = 1,402 : x
  2. Step 2: Convert to fraction form
    908.50/1,402 = 1,402/x
  3. Step 3: Cross multiply
    908.50x = 1,402 × 1,402
  4. Step 4: Simplify right side
    908.50x = 1,965,604
  5. Step 5: Solve for x
    x = 1,965,604/908.50
  6. Step 6: Final answer
    x = 2,163.57

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.