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Finding the Fourth Proportional to 28,874.52, 43,231.86 and 14,804.20

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Solution

The fourth proportional to 28,874.52, 43,231.86 and 14,804.20 is: 22,165.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,874.52 : 43,231.86 = 14,804.20 : x
  2. Step 2: Convert to fraction form
    28,874.52/43,231.86 = 14,804.20/x
  3. Step 3: Cross multiply
    28,874.52x = 43,231.86 × 14,804.20
  4. Step 4: Simplify right side
    28,874.52x = 640,013,101.81
  5. Step 5: Solve for x
    x = 640,013,101.81/28,874.52
  6. Step 6: Final answer
    x = 22,165.32

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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.