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Finding the Fourth Proportional to 18,039.13, 27,058.62 and 4,891.46

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Solution

The fourth proportional to 18,039.13, 27,058.62 and 4,891.46 is: 7,337.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,039.13 : 27,058.62 = 4,891.46 : x
  2. Step 2: Convert to fraction form
    18,039.13/27,058.62 = 4,891.46/x
  3. Step 3: Cross multiply
    18,039.13x = 27,058.62 × 4,891.46
  4. Step 4: Simplify right side
    18,039.13x = 132,356,157.39
  5. Step 5: Solve for x
    x = 132,356,157.39/18,039.13
  6. Step 6: Final answer
    x = 7,337.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.