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Finding the Fourth Proportional to 54,571.40, 81,857.10 and 48,010.40

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Solution

The fourth proportional to 54,571.40, 81,857.10 and 48,010.40 is: 72,015.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,571.40 : 81,857.10 = 48,010.40 : x
  2. Step 2: Convert to fraction form
    54,571.40/81,857.10 = 48,010.40/x
  3. Step 3: Cross multiply
    54,571.40x = 81,857.10 × 48,010.40
  4. Step 4: Simplify right side
    54,571.40x = 3,929,992,113.84
  5. Step 5: Solve for x
    x = 3,929,992,113.84/54,571.40
  6. Step 6: Final answer
    x = 72,015.60

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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.