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Finding the Fourth Proportional to 79,390.85, 109,560.62 and 43,584.13

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Solution

The fourth proportional to 79,390.85, 109,560.62 and 43,584.13 is: 60,146.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,390.85 : 109,560.62 = 43,584.13 : x
  2. Step 2: Convert to fraction form
    79,390.85/109,560.62 = 43,584.13/x
  3. Step 3: Cross multiply
    79,390.85x = 109,560.62 × 43,584.13
  4. Step 4: Simplify right side
    79,390.85x = 4,775,103,539.24
  5. Step 5: Solve for x
    x = 4,775,103,539.24/79,390.85
  6. Step 6: Final answer
    x = 60,146.77

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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.