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Finding the Fourth Proportional to 54,588.39, 81,407.71 and 48,540.66

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Solution

The fourth proportional to 54,588.39, 81,407.71 and 48,540.66 is: 72,388.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,588.39 : 81,407.71 = 48,540.66 : x
  2. Step 2: Convert to fraction form
    54,588.39/81,407.71 = 48,540.66/x
  3. Step 3: Cross multiply
    54,588.39x = 81,407.71 × 48,540.66
  4. Step 4: Simplify right side
    54,588.39x = 3,951,583,322.75
  5. Step 5: Solve for x
    x = 3,951,583,322.75/54,588.39
  6. Step 6: Final answer
    x = 72,388.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.