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Finding the Third Proportional to 4,610 and 7,178

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Solution

The third proportional to 4,610 and 7,178 is: 11,176.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,610 : 7,178 = 7,178 : x
  2. Step 2: Convert to fraction form
    4,610/7,178 = 7,178/x
  3. Step 3: Cross multiply
    4,610x = 7,178 × 7,178
  4. Step 4: Simplify right side
    4,610x = 51,523,684
  5. Step 5: Solve for x
    x = 51,523,684/4,610
  6. Step 6: Final answer
    x = 11,176.50

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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.