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Finding the Fourth Proportional to 18,643.11, 27,964.74 and 7,550.01

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Solution

The fourth proportional to 18,643.11, 27,964.74 and 7,550.01 is: 11,325.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,643.11 : 27,964.74 = 7,550.01 : x
  2. Step 2: Convert to fraction form
    18,643.11/27,964.74 = 7,550.01/x
  3. Step 3: Cross multiply
    18,643.11x = 27,964.74 × 7,550.01
  4. Step 4: Simplify right side
    18,643.11x = 211,134,094.96
  5. Step 5: Solve for x
    x = 211,134,094.96/18,643.11
  6. Step 6: Final answer
    x = 11,325.05

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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.