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Finding the Third Proportional to 846 and 1,318.50

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Solution

The third proportional to 846 and 1,318.50 is: 2,054.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    846 : 1,318.50 = 1,318.50 : x
  2. Step 2: Convert to fraction form
    846/1,318.50 = 1,318.50/x
  3. Step 3: Cross multiply
    846x = 1,318.50 × 1,318.50
  4. Step 4: Simplify right side
    846x = 1,738,442.25
  5. Step 5: Solve for x
    x = 1,738,442.25/846
  6. Step 6: Final answer
    x = 2,054.90

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.