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Finding the Fourth Proportional to 66,501.96, 99,669.66 and 33,231.36

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Solution

The fourth proportional to 66,501.96, 99,669.66 and 33,231.36 is: 49,805.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,501.96 : 99,669.66 = 33,231.36 : x
  2. Step 2: Convert to fraction form
    66,501.96/99,669.66 = 33,231.36/x
  3. Step 3: Cross multiply
    66,501.96x = 99,669.66 × 33,231.36
  4. Step 4: Simplify right side
    66,501.96x = 3,312,158,352.54
  5. Step 5: Solve for x
    x = 3,312,158,352.54/66,501.96
  6. Step 6: Final answer
    x = 49,805.42

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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.