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Finding the Fourth Proportional to 54,033.44, 81,085.72 and 18,972.16

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Solution

The fourth proportional to 54,033.44, 81,085.72 and 18,972.16 is: 28,470.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,033.44 : 81,085.72 = 18,972.16 : x
  2. Step 2: Convert to fraction form
    54,033.44/81,085.72 = 18,972.16/x
  3. Step 3: Cross multiply
    54,033.44x = 81,085.72 × 18,972.16
  4. Step 4: Simplify right side
    54,033.44x = 1,538,371,253.56
  5. Step 5: Solve for x
    x = 1,538,371,253.56/54,033.44
  6. Step 6: Final answer
    x = 28,470.73

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1.5x scale

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.