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Finding the Third Proportional to 7,442 and 10,405

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Solution

The third proportional to 7,442 and 10,405 is: 14,547.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,442 : 10,405 = 10,405 : x
  2. Step 2: Convert to fraction form
    7,442/10,405 = 10,405/x
  3. Step 3: Cross multiply
    7,442x = 10,405 × 10,405
  4. Step 4: Simplify right side
    7,442x = 108,264,025
  5. Step 5: Solve for x
    x = 108,264,025/7,442
  6. Step 6: Final answer
    x = 14,547.71

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These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.