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Finding the Third Proportional to 7,410 and 11,142

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Solution

The third proportional to 7,410 and 11,142 is: 16,753.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,410 : 11,142 = 11,142 : x
  2. Step 2: Convert to fraction form
    7,410/11,142 = 11,142/x
  3. Step 3: Cross multiply
    7,410x = 11,142 × 11,142
  4. Step 4: Simplify right side
    7,410x = 124,144,164
  5. Step 5: Solve for x
    x = 124,144,164/7,410
  6. Step 6: Final answer
    x = 16,753.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.