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Finding the Fourth Proportional to 67,805.76, 93,481.92 and 55,661.76

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Solution

The fourth proportional to 67,805.76, 93,481.92 and 55,661.76 is: 76,739.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,805.76 : 93,481.92 = 55,661.76 : x
  2. Step 2: Convert to fraction form
    67,805.76/93,481.92 = 55,661.76/x
  3. Step 3: Cross multiply
    67,805.76x = 93,481.92 × 55,661.76
  4. Step 4: Simplify right side
    67,805.76x = 5,203,368,195.38
  5. Step 5: Solve for x
    x = 5,203,368,195.38/67,805.76
  6. Step 6: Final answer
    x = 76,739.32

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1.5x scale

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.