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Finding the Third Proportional to 47,690 and 75,498

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Solution

The third proportional to 47,690 and 75,498 is: 119,520.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,690 : 75,498 = 75,498 : x
  2. Step 2: Convert to fraction form
    47,690/75,498 = 75,498/x
  3. Step 3: Cross multiply
    47,690x = 75,498 × 75,498
  4. Step 4: Simplify right side
    47,690x = 5,699,948,004
  5. Step 5: Solve for x
    x = 5,699,948,004/47,690
  6. Step 6: Final answer
    x = 119,520.82

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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.