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Finding the Fourth Proportional to 29,908.72, 44,863.26 and 7,720.58

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Solution

The fourth proportional to 29,908.72, 44,863.26 and 7,720.58 is: 11,580.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,908.72 : 44,863.26 = 7,720.58 : x
  2. Step 2: Convert to fraction form
    29,908.72/44,863.26 = 7,720.58/x
  3. Step 3: Cross multiply
    29,908.72x = 44,863.26 × 7,720.58
  4. Step 4: Simplify right side
    29,908.72x = 346,370,471.10
  5. Step 5: Solve for x
    x = 346,370,471.10/29,908.72
  6. Step 6: Final answer
    x = 11,580.92

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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.