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Finding the Fourth Proportional to 13,318.02, 18,370.74 and 8,536.38

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Solution

The fourth proportional to 13,318.02, 18,370.74 and 8,536.38 is: 11,774.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.02 : 18,370.74 = 8,536.38 : x
  2. Step 2: Convert to fraction form
    13,318.02/18,370.74 = 8,536.38/x
  3. Step 3: Cross multiply
    13,318.02x = 18,370.74 × 8,536.38
  4. Step 4: Simplify right side
    13,318.02x = 156,819,617.52
  5. Step 5: Solve for x
    x = 156,819,617.52/13,318.02
  6. Step 6: Final answer
    x = 11,774.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.