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Finding the Fourth Proportional to 69,893.30, 96,449.45 and 39,674.63

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Solution

The fourth proportional to 69,893.30, 96,449.45 and 39,674.63 is: 54,749.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,893.30 : 96,449.45 = 39,674.63 : x
  2. Step 2: Convert to fraction form
    69,893.30/96,449.45 = 39,674.63/x
  3. Step 3: Cross multiply
    69,893.30x = 96,449.45 × 39,674.63
  4. Step 4: Simplify right side
    69,893.30x = 3,826,595,561.83
  5. Step 5: Solve for x
    x = 3,826,595,561.83/69,893.30
  6. Step 6: Final answer
    x = 54,749.11

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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.