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Finding the Third Proportional to 658.50 and 1,125

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Solution

The third proportional to 658.50 and 1,125 is: 1,921.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.50 : 1,125 = 1,125 : x
  2. Step 2: Convert to fraction form
    658.50/1,125 = 1,125/x
  3. Step 3: Cross multiply
    658.50x = 1,125 × 1,125
  4. Step 4: Simplify right side
    658.50x = 1,265,625
  5. Step 5: Solve for x
    x = 1,265,625/658.50
  6. Step 6: Final answer
    x = 1,921.98

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Why These Related Problems?

These problems maintain the same ratio (1.71) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.