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Finding the Fourth Proportional to 28,873.26, 43,311.78 and 9,153

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Solution

The fourth proportional to 28,873.26, 43,311.78 and 9,153 is: 13,730.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,873.26 : 43,311.78 = 9,153 : x
  2. Step 2: Convert to fraction form
    28,873.26/43,311.78 = 9,153/x
  3. Step 3: Cross multiply
    28,873.26x = 43,311.78 × 9,153
  4. Step 4: Simplify right side
    28,873.26x = 396,432,722.34
  5. Step 5: Solve for x
    x = 396,432,722.34/28,873.26
  6. Step 6: Final answer
    x = 13,730.10

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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.