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Finding the Fourth Proportional to 43,761.92, 65,650.56 and 19,155.20

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Solution

The fourth proportional to 43,761.92, 65,650.56 and 19,155.20 is: 28,736.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,761.92 : 65,650.56 = 19,155.20 : x
  2. Step 2: Convert to fraction form
    43,761.92/65,650.56 = 19,155.20/x
  3. Step 3: Cross multiply
    43,761.92x = 65,650.56 × 19,155.20
  4. Step 4: Simplify right side
    43,761.92x = 1,257,549,606.91
  5. Step 5: Solve for x
    x = 1,257,549,606.91/43,761.92
  6. Step 6: Final answer
    x = 28,736.16

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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.