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Finding the Fourth Proportional to 54,890.91, 82,329.08 and 15,451.40

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Solution

The fourth proportional to 54,890.91, 82,329.08 and 15,451.40 is: 23,175.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,890.91 : 82,329.08 = 15,451.40 : x
  2. Step 2: Convert to fraction form
    54,890.91/82,329.08 = 15,451.40/x
  3. Step 3: Cross multiply
    54,890.91x = 82,329.08 × 15,451.40
  4. Step 4: Simplify right side
    54,890.91x = 1,272,099,675.28
  5. Step 5: Solve for x
    x = 1,272,099,675.28/54,890.91
  6. Step 6: Final answer
    x = 23,175.05

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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.