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Finding the Fourth Proportional to 69,891.93, 96,451.79 and 39,674.97

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Solution

The fourth proportional to 69,891.93, 96,451.79 and 39,674.97 is: 54,751.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,891.93 : 96,451.79 = 39,674.97 : x
  2. Step 2: Convert to fraction form
    69,891.93/96,451.79 = 39,674.97/x
  3. Step 3: Cross multiply
    69,891.93x = 96,451.79 × 39,674.97
  4. Step 4: Simplify right side
    69,891.93x = 3,826,721,676.32
  5. Step 5: Solve for x
    x = 3,826,721,676.32/69,891.93
  6. Step 6: Final answer
    x = 54,751.98

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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.