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Finding the Fourth Proportional to 18,315.52, 27,475.10 and 5,168.00

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Solution

The fourth proportional to 18,315.52, 27,475.10 and 5,168.00 is: 7,752.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,315.52 : 27,475.10 = 5,168.00 : x
  2. Step 2: Convert to fraction form
    18,315.52/27,475.10 = 5,168.00/x
  3. Step 3: Cross multiply
    18,315.52x = 27,475.10 × 5,168.00
  4. Step 4: Simplify right side
    18,315.52x = 141,991,379.03
  5. Step 5: Solve for x
    x = 141,991,379.03/18,315.52
  6. Step 6: Final answer
    x = 7,752.52

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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.