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Finding the Fourth Proportional to 58,872.48, 81,261.81 and 40,020.54

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Solution

The fourth proportional to 58,872.48, 81,261.81 and 40,020.54 is: 55,240.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,872.48 : 81,261.81 = 40,020.54 : x
  2. Step 2: Convert to fraction form
    58,872.48/81,261.81 = 40,020.54/x
  3. Step 3: Cross multiply
    58,872.48x = 81,261.81 × 40,020.54
  4. Step 4: Simplify right side
    58,872.48x = 3,252,141,517.58
  5. Step 5: Solve for x
    x = 3,252,141,517.58/58,872.48
  6. Step 6: Final answer
    x = 55,240.44

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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.