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Finding the Fourth Proportional to 54,080.48, 81,128.48 and 16,643.72

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Solution

The fourth proportional to 54,080.48, 81,128.48 and 16,643.72 is: 24,967.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,080.48 : 81,128.48 = 16,643.72 : x
  2. Step 2: Convert to fraction form
    54,080.48/81,128.48 = 16,643.72/x
  3. Step 3: Cross multiply
    54,080.48x = 81,128.48 × 16,643.72
  4. Step 4: Simplify right side
    54,080.48x = 1,350,279,216.28
  5. Step 5: Solve for x
    x = 1,350,279,216.28/54,080.48
  6. Step 6: Final answer
    x = 24,967.96

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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.