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Finding the Fourth Proportional to 79,294.58, 109,429.67 and 43,485.87

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Solution

The fourth proportional to 79,294.58, 109,429.67 and 43,485.87 is: 60,012.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,294.58 : 109,429.67 = 43,485.87 : x
  2. Step 2: Convert to fraction form
    79,294.58/109,429.67 = 43,485.87/x
  3. Step 3: Cross multiply
    79,294.58x = 109,429.67 × 43,485.87
  4. Step 4: Simplify right side
    79,294.58x = 4,758,644,186.33
  5. Step 5: Solve for x
    x = 4,758,644,186.33/79,294.58
  6. Step 6: Final answer
    x = 60,012.23

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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.