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Finding the Third Proportional to 886.50 and 1,143

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Solution

The third proportional to 886.50 and 1,143 is: 1,473.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.50 : 1,143 = 1,143 : x
  2. Step 2: Convert to fraction form
    886.50/1,143 = 1,143/x
  3. Step 3: Cross multiply
    886.50x = 1,143 × 1,143
  4. Step 4: Simplify right side
    886.50x = 1,306,449
  5. Step 5: Solve for x
    x = 1,306,449/886.50
  6. Step 6: Final answer
    x = 1,473.72

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Why These Related Problems?

These problems maintain the same ratio (1.29) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.