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Finding the Fourth Proportional to 74,668.96, 111,990.48 and 25,420.96

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Solution

The fourth proportional to 74,668.96, 111,990.48 and 25,420.96 is: 38,127.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,668.96 : 111,990.48 = 25,420.96 : x
  2. Step 2: Convert to fraction form
    74,668.96/111,990.48 = 25,420.96/x
  3. Step 3: Cross multiply
    74,668.96x = 111,990.48 × 25,420.96
  4. Step 4: Simplify right side
    74,668.96x = 2,846,905,512.46
  5. Step 5: Solve for x
    x = 2,846,905,512.46/74,668.96
  6. Step 6: Final answer
    x = 38,127.03

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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.