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Finding the Fourth Proportional to 79,274.14, 109,398.28 and 43,463.39

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Solution

The fourth proportional to 79,274.14, 109,398.28 and 43,463.39 is: 59,979.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,274.14 : 109,398.28 = 43,463.39 : x
  2. Step 2: Convert to fraction form
    79,274.14/109,398.28 = 43,463.39/x
  3. Step 3: Cross multiply
    79,274.14x = 109,398.28 × 43,463.39
  4. Step 4: Simplify right side
    79,274.14x = 4,754,820,108.97
  5. Step 5: Solve for x
    x = 4,754,820,108.97/79,274.14
  6. Step 6: Final answer
    x = 59,979.46

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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.