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Finding the Fourth Proportional to 69,982.99, 96,548.96 and 43,078.74

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Solution

The fourth proportional to 69,982.99, 96,548.96 and 43,078.74 is: 59,431.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,982.99 : 96,548.96 = 43,078.74 : x
  2. Step 2: Convert to fraction form
    69,982.99/96,548.96 = 43,078.74/x
  3. Step 3: Cross multiply
    69,982.99x = 96,548.96 × 43,078.74
  4. Step 4: Simplify right side
    69,982.99x = 4,159,207,290.75
  5. Step 5: Solve for x
    x = 4,159,207,290.75/69,982.99
  6. Step 6: Final answer
    x = 59,431.69

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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.