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Finding the Fourth Proportional to 28,835.66, 43,255.20 and 8,059.16

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Solution

The fourth proportional to 28,835.66, 43,255.20 and 8,059.16 is: 12,089.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,835.66 : 43,255.20 = 8,059.16 : x
  2. Step 2: Convert to fraction form
    28,835.66/43,255.20 = 8,059.16/x
  3. Step 3: Cross multiply
    28,835.66x = 43,255.20 × 8,059.16
  4. Step 4: Simplify right side
    28,835.66x = 348,600,361.36
  5. Step 5: Solve for x
    x = 348,600,361.36/28,835.66
  6. Step 6: Final answer
    x = 12,089.21

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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.