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Finding the Fourth Proportional to 29,979.55, 44,969.45 and 7,791.35

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Solution

The fourth proportional to 29,979.55, 44,969.45 and 7,791.35 is: 11,687.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,979.55 : 44,969.45 = 7,791.35 : x
  2. Step 2: Convert to fraction form
    29,979.55/44,969.45 = 7,791.35/x
  3. Step 3: Cross multiply
    29,979.55x = 44,969.45 × 7,791.35
  4. Step 4: Simplify right side
    29,979.55x = 350,372,724.26
  5. Step 5: Solve for x
    x = 350,372,724.26/29,979.55
  6. Step 6: Final answer
    x = 11,687.06

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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.