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Finding the Fourth Proportional to 54,479.79, 81,713.57 and 15,042.51

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Solution

The fourth proportional to 54,479.79, 81,713.57 and 15,042.51 is: 22,562.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,479.79 : 81,713.57 = 15,042.51 : x
  2. Step 2: Convert to fraction form
    54,479.79/81,713.57 = 15,042.51/x
  3. Step 3: Cross multiply
    54,479.79x = 81,713.57 × 15,042.51
  4. Step 4: Simplify right side
    54,479.79x = 1,229,177,118.65
  5. Step 5: Solve for x
    x = 1,229,177,118.65/54,479.79
  6. Step 6: Final answer
    x = 22,562.08

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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.