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Finding the Fourth Proportional to 79,274.73, 109,398.15 and 43,464.77

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Solution

The fourth proportional to 79,274.73, 109,398.15 and 43,464.77 is: 59,980.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,274.73 : 109,398.15 = 43,464.77 : x
  2. Step 2: Convert to fraction form
    79,274.73/109,398.15 = 43,464.77/x
  3. Step 3: Cross multiply
    79,274.73x = 109,398.15 × 43,464.77
  4. Step 4: Simplify right side
    79,274.73x = 4,754,965,428.18
  5. Step 5: Solve for x
    x = 4,754,965,428.18/79,274.73
  6. Step 6: Final answer
    x = 59,980.85

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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.