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Finding the Third Proportional to 47,685 and 75,491

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Solution

The third proportional to 47,685 and 75,491 is: 119,511.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,685 : 75,491 = 75,491 : x
  2. Step 2: Convert to fraction form
    47,685/75,491 = 75,491/x
  3. Step 3: Cross multiply
    47,685x = 75,491 × 75,491
  4. Step 4: Simplify right side
    47,685x = 5,698,891,081
  5. Step 5: Solve for x
    x = 5,698,891,081/47,685
  6. Step 6: Final answer
    x = 119,511.19

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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.