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Finding the Fourth Proportional to 29,980.35, 44,976.92 and 8,920.46

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Solution

The fourth proportional to 29,980.35, 44,976.92 and 8,920.46 is: 13,382.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,980.35 : 44,976.92 = 8,920.46 : x
  2. Step 2: Convert to fraction form
    29,980.35/44,976.92 = 8,920.46/x
  3. Step 3: Cross multiply
    29,980.35x = 44,976.92 × 8,920.46
  4. Step 4: Simplify right side
    29,980.35x = 401,214,883.62
  5. Step 5: Solve for x
    x = 401,214,883.62/29,980.35
  6. Step 6: Final answer
    x = 13,382.60

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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.