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Finding the Third Proportional to 11,130.50 and 17,115.75

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Solution

The third proportional to 11,130.50 and 17,115.75 is: 26,319.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,130.50 : 17,115.75 = 17,115.75 : x
  2. Step 2: Convert to fraction form
    11,130.50/17,115.75 = 17,115.75/x
  3. Step 3: Cross multiply
    11,130.50x = 17,115.75 × 17,115.75
  4. Step 4: Simplify right side
    11,130.50x = 292,948,898.06
  5. Step 5: Solve for x
    x = 292,948,898.06/11,130.50
  6. Step 6: Final answer
    x = 26,319.47

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.