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Finding the Fourth Proportional to 26,372.78, 39,550.91 and 7,654.11

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Solution

The fourth proportional to 26,372.78, 39,550.91 and 7,654.11 is: 11,478.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,372.78 : 39,550.91 = 7,654.11 : x
  2. Step 2: Convert to fraction form
    26,372.78/39,550.91 = 7,654.11/x
  3. Step 3: Cross multiply
    26,372.78x = 39,550.91 × 7,654.11
  4. Step 4: Simplify right side
    26,372.78x = 302,727,015.74
  5. Step 5: Solve for x
    x = 302,727,015.74/26,372.78
  6. Step 6: Final answer
    x = 11,478.77

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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.