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Finding the Fourth Proportional to 39,281.80, 58,922.70 and 26,840.20

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Solution

The fourth proportional to 39,281.80, 58,922.70 and 26,840.20 is: 40,260.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,281.80 : 58,922.70 = 26,840.20 : x
  2. Step 2: Convert to fraction form
    39,281.80/58,922.70 = 26,840.20/x
  3. Step 3: Cross multiply
    39,281.80x = 58,922.70 × 26,840.20
  4. Step 4: Simplify right side
    39,281.80x = 1,581,497,052.54
  5. Step 5: Solve for x
    x = 1,581,497,052.54/39,281.80
  6. Step 6: Final answer
    x = 40,260.30

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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.