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Finding the Fourth Proportional to 40,951.99, 61,429.20 and 11,372

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Solution

The fourth proportional to 40,951.99, 61,429.20 and 11,372 is: 17,058.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,951.99 : 61,429.20 = 11,372 : x
  2. Step 2: Convert to fraction form
    40,951.99/61,429.20 = 11,372/x
  3. Step 3: Cross multiply
    40,951.99x = 61,429.20 × 11,372
  4. Step 4: Simplify right side
    40,951.99x = 698,572,805.54
  5. Step 5: Solve for x
    x = 698,572,805.54/40,951.99
  6. Step 6: Final answer
    x = 17,058.34

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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.