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Finding the Fourth Proportional to 18,017.62, 27,027.11 and 4,870.00

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Solution

The fourth proportional to 18,017.62, 27,027.11 and 4,870.00 is: 7,305.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,017.62 : 27,027.11 = 4,870.00 : x
  2. Step 2: Convert to fraction form
    18,017.62/27,027.11 = 4,870.00/x
  3. Step 3: Cross multiply
    18,017.62x = 27,027.11 × 4,870.00
  4. Step 4: Simplify right side
    18,017.62x = 131,621,890.56
  5. Step 5: Solve for x
    x = 131,621,890.56/18,017.62
  6. Step 6: Final answer
    x = 7,305.18

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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.