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Finding the Fourth Proportional to 79,930.66, 119,870.02 and 26,608.31

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Solution

The fourth proportional to 79,930.66, 119,870.02 and 26,608.31 is: 39,903.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,930.66 : 119,870.02 = 26,608.31 : x
  2. Step 2: Convert to fraction form
    79,930.66/119,870.02 = 26,608.31/x
  3. Step 3: Cross multiply
    79,930.66x = 119,870.02 × 26,608.31
  4. Step 4: Simplify right side
    79,930.66x = 3,189,538,718.39
  5. Step 5: Solve for x
    x = 3,189,538,718.39/79,930.66
  6. Step 6: Final answer
    x = 39,903.82

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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.