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Finding the Fourth Proportional to 54,426.48, 81,628.80 and 16,980.48

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Solution

The fourth proportional to 54,426.48, 81,628.80 and 16,980.48 is: 25,467.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,426.48 : 81,628.80 = 16,980.48 : x
  2. Step 2: Convert to fraction form
    54,426.48/81,628.80 = 16,980.48/x
  3. Step 3: Cross multiply
    54,426.48x = 81,628.80 × 16,980.48
  4. Step 4: Simplify right side
    54,426.48x = 1,386,096,205.82
  5. Step 5: Solve for x
    x = 1,386,096,205.82/54,426.48
  6. Step 6: Final answer
    x = 25,467.31

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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.