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Finding the Fourth Proportional to 47,187.92, 65,120.88 and 25,968.80

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Solution

The fourth proportional to 47,187.92, 65,120.88 and 25,968.80 is: 35,837.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,187.92 : 65,120.88 = 25,968.80 : x
  2. Step 2: Convert to fraction form
    47,187.92/65,120.88 = 25,968.80/x
  3. Step 3: Cross multiply
    47,187.92x = 65,120.88 × 25,968.80
  4. Step 4: Simplify right side
    47,187.92x = 1,691,111,108.54
  5. Step 5: Solve for x
    x = 1,691,111,108.54/47,187.92
  6. Step 6: Final answer
    x = 35,837.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.