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Finding the Fourth Proportional to 17,617.78, 26,408.76 and 11,048.55

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Solution

The fourth proportional to 17,617.78, 26,408.76 and 11,048.55 is: 16,561.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,617.78 : 26,408.76 = 11,048.55 : x
  2. Step 2: Convert to fraction form
    17,617.78/26,408.76 = 11,048.55/x
  3. Step 3: Cross multiply
    17,617.78x = 26,408.76 × 11,048.55
  4. Step 4: Simplify right side
    17,617.78x = 291,778,505.30
  5. Step 5: Solve for x
    x = 291,778,505.30/17,617.78
  6. Step 6: Final answer
    x = 16,561.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.