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Finding the Third Proportional to 47,699 and 75,515

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Solution

The third proportional to 47,699 and 75,515 is: 119,552.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,699 : 75,515 = 75,515 : x
  2. Step 2: Convert to fraction form
    47,699/75,515 = 75,515/x
  3. Step 3: Cross multiply
    47,699x = 75,515 × 75,515
  4. Step 4: Simplify right side
    47,699x = 5,702,515,225
  5. Step 5: Solve for x
    x = 5,702,515,225/47,699
  6. Step 6: Final answer
    x = 119,552.09

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.