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Finding the Third Proportional to 53,005.50 and 75,861

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Solution

The third proportional to 53,005.50 and 75,861 is: 108,571.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,005.50 : 75,861 = 75,861 : x
  2. Step 2: Convert to fraction form
    53,005.50/75,861 = 75,861/x
  3. Step 3: Cross multiply
    53,005.50x = 75,861 × 75,861
  4. Step 4: Simplify right side
    53,005.50x = 5,754,891,321
  5. Step 5: Solve for x
    x = 5,754,891,321/53,005.50
  6. Step 6: Final answer
    x = 108,571.59

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.