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Finding the Fourth Proportional to 37,480.92, 51,721.92 and 20,486.04

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Solution

The fourth proportional to 37,480.92, 51,721.92 and 20,486.04 is: 28,269.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,480.92 : 51,721.92 = 20,486.04 : x
  2. Step 2: Convert to fraction form
    37,480.92/51,721.92 = 20,486.04/x
  3. Step 3: Cross multiply
    37,480.92x = 51,721.92 × 20,486.04
  4. Step 4: Simplify right side
    37,480.92x = 1,059,577,322.00
  5. Step 5: Solve for x
    x = 1,059,577,322.00/37,480.92
  6. Step 6: Final answer
    x = 28,269.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.