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Finding the Fourth Proportional to 79,468.99, 109,669.13 and 43,661.32

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Solution

The fourth proportional to 79,468.99, 109,669.13 and 43,661.32 is: 60,253.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,468.99 : 109,669.13 = 43,661.32 : x
  2. Step 2: Convert to fraction form
    79,468.99/109,669.13 = 43,661.32/x
  3. Step 3: Cross multiply
    79,468.99x = 109,669.13 × 43,661.32
  4. Step 4: Simplify right side
    79,468.99x = 4,788,298,979.05
  5. Step 5: Solve for x
    x = 4,788,298,979.05/79,468.99
  6. Step 6: Final answer
    x = 60,253.68

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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.