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Finding the Third Proportional to 47,245.50 and 77,328

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Solution

The third proportional to 47,245.50 and 77,328 is: 126,564.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,245.50 : 77,328 = 77,328 : x
  2. Step 2: Convert to fraction form
    47,245.50/77,328 = 77,328/x
  3. Step 3: Cross multiply
    47,245.50x = 77,328 × 77,328
  4. Step 4: Simplify right side
    47,245.50x = 5,979,619,584
  5. Step 5: Solve for x
    x = 5,979,619,584/47,245.50
  6. Step 6: Final answer
    x = 126,564.85

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Why These Related Problems?

These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.