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Finding the Fourth Proportional to 66,137.04, 99,180.80 and 26,672.64

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Solution

The fourth proportional to 66,137.04, 99,180.80 and 26,672.64 is: 39,998.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,137.04 : 99,180.80 = 26,672.64 : x
  2. Step 2: Convert to fraction form
    66,137.04/99,180.80 = 26,672.64/x
  3. Step 3: Cross multiply
    66,137.04x = 99,180.80 × 26,672.64
  4. Step 4: Simplify right side
    66,137.04x = 2,645,413,773.31
  5. Step 5: Solve for x
    x = 2,645,413,773.31/66,137.04
  6. Step 6: Final answer
    x = 39,998.97

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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.