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Finding the Fourth Proportional to 69,712.63, 96,195.62 and 39,491.48

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Solution

The fourth proportional to 69,712.63, 96,195.62 and 39,491.48 is: 54,493.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,712.63 : 96,195.62 = 39,491.48 : x
  2. Step 2: Convert to fraction form
    69,712.63/96,195.62 = 39,491.48/x
  3. Step 3: Cross multiply
    69,712.63x = 96,195.62 × 39,491.48
  4. Step 4: Simplify right side
    69,712.63x = 3,798,907,403.32
  5. Step 5: Solve for x
    x = 3,798,907,403.32/69,712.63
  6. Step 6: Final answer
    x = 54,493.82

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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.