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Finding the Third Proportional to 925.50 and 987

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Solution

The third proportional to 925.50 and 987 is: 1,052.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    925.50 : 987 = 987 : x
  2. Step 2: Convert to fraction form
    925.50/987 = 987/x
  3. Step 3: Cross multiply
    925.50x = 987 × 987
  4. Step 4: Simplify right side
    925.50x = 974,169
  5. Step 5: Solve for x
    x = 974,169/925.50
  6. Step 6: Final answer
    x = 1,052.59

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Why These Related Problems?

These problems maintain the same ratio (1.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.