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Finding the Third Proportional to 552.75 and 786

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Solution

The third proportional to 552.75 and 786 is: 1,117.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.75 : 786 = 786 : x
  2. Step 2: Convert to fraction form
    552.75/786 = 786/x
  3. Step 3: Cross multiply
    552.75x = 786 × 786
  4. Step 4: Simplify right side
    552.75x = 617,796
  5. Step 5: Solve for x
    x = 617,796/552.75
  6. Step 6: Final answer
    x = 1,117.68

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.