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Finding the Fourth Proportional to 37,480.56, 51,720.84 and 20,713.92

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Solution

The fourth proportional to 37,480.56, 51,720.84 and 20,713.92 is: 28,583.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,480.56 : 51,720.84 = 20,713.92 : x
  2. Step 2: Convert to fraction form
    37,480.56/51,720.84 = 20,713.92/x
  3. Step 3: Cross multiply
    37,480.56x = 51,720.84 × 20,713.92
  4. Step 4: Simplify right side
    37,480.56x = 1,071,341,342.09
  5. Step 5: Solve for x
    x = 1,071,341,342.09/37,480.56
  6. Step 6: Final answer
    x = 28,583.92

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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.