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Finding the Fourth Proportional to 74,663.96, 111,982.98 and 25,415.96

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Solution

The fourth proportional to 74,663.96, 111,982.98 and 25,415.96 is: 38,119.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,663.96 : 111,982.98 = 25,415.96 : x
  2. Step 2: Convert to fraction form
    74,663.96/111,982.98 = 25,415.96/x
  3. Step 3: Cross multiply
    74,663.96x = 111,982.98 × 25,415.96
  4. Step 4: Simplify right side
    74,663.96x = 2,846,154,940.36
  5. Step 5: Solve for x
    x = 2,846,154,940.36/74,663.96
  6. Step 6: Final answer
    x = 38,119.53

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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.