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Finding the Third Proportional to 862.50 and 1,169

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Solution

The third proportional to 862.50 and 1,169 is: 1,584.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    862.50 : 1,169 = 1,169 : x
  2. Step 2: Convert to fraction form
    862.50/1,169 = 1,169/x
  3. Step 3: Cross multiply
    862.50x = 1,169 × 1,169
  4. Step 4: Simplify right side
    862.50x = 1,366,561
  5. Step 5: Solve for x
    x = 1,366,561/862.50
  6. Step 6: Final answer
    x = 1,584.42

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.