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Finding the Third Proportional to 15,530.50 and 33,520

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Solution

The third proportional to 15,530.50 and 33,520 is: 72,347.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,530.50 : 33,520 = 33,520 : x
  2. Step 2: Convert to fraction form
    15,530.50/33,520 = 33,520/x
  3. Step 3: Cross multiply
    15,530.50x = 33,520 × 33,520
  4. Step 4: Simplify right side
    15,530.50x = 1,123,590,400
  5. Step 5: Solve for x
    x = 1,123,590,400/15,530.50
  6. Step 6: Final answer
    x = 72,347.34

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.