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Finding the Third Proportional to 931 and 1,435

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Solution

The third proportional to 931 and 1,435 is: 2,211.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    931 : 1,435 = 1,435 : x
  2. Step 2: Convert to fraction form
    931/1,435 = 1,435/x
  3. Step 3: Cross multiply
    931x = 1,435 × 1,435
  4. Step 4: Simplify right side
    931x = 2,059,225
  5. Step 5: Solve for x
    x = 2,059,225/931
  6. Step 6: Final answer
    x = 2,211.84

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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.