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Finding the Fourth Proportional to 40,662.76, 60,979.06 and 14,001.30

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Solution

The fourth proportional to 40,662.76, 60,979.06 and 14,001.30 is: 20,996.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,662.76 : 60,979.06 = 14,001.30 : x
  2. Step 2: Convert to fraction form
    40,662.76/60,979.06 = 14,001.30/x
  3. Step 3: Cross multiply
    40,662.76x = 60,979.06 × 14,001.30
  4. Step 4: Simplify right side
    40,662.76x = 853,786,112.78
  5. Step 5: Solve for x
    x = 853,786,112.78/40,662.76
  6. Step 6: Final answer
    x = 20,996.76

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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.