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Finding the Fourth Proportional to 67,959.76, 93,790.36 and 39,674.56

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Solution

The fourth proportional to 67,959.76, 93,790.36 and 39,674.56 is: 54,754.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,959.76 : 93,790.36 = 39,674.56 : x
  2. Step 2: Convert to fraction form
    67,959.76/93,790.36 = 39,674.56/x
  3. Step 3: Cross multiply
    67,959.76x = 93,790.36 × 39,674.56
  4. Step 4: Simplify right side
    67,959.76x = 3,721,091,265.24
  5. Step 5: Solve for x
    x = 3,721,091,265.24/67,959.76
  6. Step 6: Final answer
    x = 54,754.33

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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.