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Finding the Fourth Proportional to 79,420.14, 119,141.70 and 26,844.66

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Solution

The fourth proportional to 79,420.14, 119,141.70 and 26,844.66 is: 40,270.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,420.14 : 119,141.70 = 26,844.66 : x
  2. Step 2: Convert to fraction form
    79,420.14/119,141.70 = 26,844.66/x
  3. Step 3: Cross multiply
    79,420.14x = 119,141.70 × 26,844.66
  4. Step 4: Simplify right side
    79,420.14x = 3,198,318,428.32
  5. Step 5: Solve for x
    x = 3,198,318,428.32/79,420.14
  6. Step 6: Final answer
    x = 40,270.87

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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.