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Finding the Fourth Proportional to 57,805.62, 86,707.21 and 26,640.87

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Solution

The fourth proportional to 57,805.62, 86,707.21 and 26,640.87 is: 39,960.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,805.62 : 86,707.21 = 26,640.87 : x
  2. Step 2: Convert to fraction form
    57,805.62/86,707.21 = 26,640.87/x
  3. Step 3: Cross multiply
    57,805.62x = 86,707.21 × 26,640.87
  4. Step 4: Simplify right side
    57,805.62x = 2,309,955,509.67
  5. Step 5: Solve for x
    x = 2,309,955,509.67/57,805.62
  6. Step 6: Final answer
    x = 39,960.74

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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.