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Finding the Fourth Proportional to 66,553.44, 99,829.92 and 19,806.32

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Solution

The fourth proportional to 66,553.44, 99,829.92 and 19,806.32 is: 29,709.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,553.44 : 99,829.92 = 19,806.32 : x
  2. Step 2: Convert to fraction form
    66,553.44/99,829.92 = 19,806.32/x
  3. Step 3: Cross multiply
    66,553.44x = 99,829.92 × 19,806.32
  4. Step 4: Simplify right side
    66,553.44x = 1,977,263,341.09
  5. Step 5: Solve for x
    x = 1,977,263,341.09/66,553.44
  6. Step 6: Final answer
    x = 29,709.41

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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.