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Finding the Third Proportional to 556 and 1,177

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Solution

The third proportional to 556 and 1,177 is: 2,491.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    556 : 1,177 = 1,177 : x
  2. Step 2: Convert to fraction form
    556/1,177 = 1,177/x
  3. Step 3: Cross multiply
    556x = 1,177 × 1,177
  4. Step 4: Simplify right side
    556x = 1,385,329
  5. Step 5: Solve for x
    x = 1,385,329/556
  6. Step 6: Final answer
    x = 2,491.60

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.