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Finding the Fourth Proportional to 66,394.77, 99,606.74 and 19,651.29

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Solution

The fourth proportional to 66,394.77, 99,606.74 and 19,651.29 is: 29,481.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,394.77 : 99,606.74 = 19,651.29 : x
  2. Step 2: Convert to fraction form
    66,394.77/99,606.74 = 19,651.29/x
  3. Step 3: Cross multiply
    66,394.77x = 99,606.74 × 19,651.29
  4. Step 4: Simplify right side
    66,394.77x = 1,957,400,835.44
  5. Step 5: Solve for x
    x = 1,957,400,835.44/66,394.77
  6. Step 6: Final answer
    x = 29,481.25

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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.