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Finding the Fourth Proportional to 54,644.42, 81,876.04 and 19,086.64

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Solution

The fourth proportional to 54,644.42, 81,876.04 and 19,086.64 is: 28,598.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,644.42 : 81,876.04 = 19,086.64 : x
  2. Step 2: Convert to fraction form
    54,644.42/81,876.04 = 19,086.64/x
  3. Step 3: Cross multiply
    54,644.42x = 81,876.04 × 19,086.64
  4. Step 4: Simplify right side
    54,644.42x = 1,562,738,500.11
  5. Step 5: Solve for x
    x = 1,562,738,500.11/54,644.42
  6. Step 6: Final answer
    x = 28,598.32

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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.