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Finding the Fourth Proportional to 62,292.75, 93,439.13 and 20,739.75

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Solution

The fourth proportional to 62,292.75, 93,439.13 and 20,739.75 is: 31,109.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,292.75 : 93,439.13 = 20,739.75 : x
  2. Step 2: Convert to fraction form
    62,292.75/93,439.13 = 20,739.75/x
  3. Step 3: Cross multiply
    62,292.75x = 93,439.13 × 20,739.75
  4. Step 4: Simplify right side
    62,292.75x = 1,937,904,092.72
  5. Step 5: Solve for x
    x = 1,937,904,092.72/62,292.75
  6. Step 6: Final answer
    x = 31,109.63

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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.