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Finding the Fourth Proportional to 26,754.17, 40,127.40 and 18,724.55

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Solution

The fourth proportional to 26,754.17, 40,127.40 and 18,724.55 is: 28,084.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,754.17 : 40,127.40 = 18,724.55 : x
  2. Step 2: Convert to fraction form
    26,754.17/40,127.40 = 18,724.55/x
  3. Step 3: Cross multiply
    26,754.17x = 40,127.40 × 18,724.55
  4. Step 4: Simplify right side
    26,754.17x = 751,367,532.75
  5. Step 5: Solve for x
    x = 751,367,532.75/26,754.17
  6. Step 6: Final answer
    x = 28,084.13

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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.