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Finding the Fourth Proportional to 79,200.99, 109,291.68 and 43,385.22

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Solution

The fourth proportional to 79,200.99, 109,291.68 and 43,385.22 is: 59,868.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,200.99 : 109,291.68 = 43,385.22 : x
  2. Step 2: Convert to fraction form
    79,200.99/109,291.68 = 43,385.22/x
  3. Step 3: Cross multiply
    79,200.99x = 109,291.68 × 43,385.22
  4. Step 4: Simplify right side
    79,200.99x = 4,741,643,580.97
  5. Step 5: Solve for x
    x = 4,741,643,580.97/79,200.99
  6. Step 6: Final answer
    x = 59,868.49

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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.