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Finding the Fourth Proportional to 14,904.68, 20,568.36 and 8,190.38

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Solution

The fourth proportional to 14,904.68, 20,568.36 and 8,190.38 is: 11,302.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,904.68 : 20,568.36 = 8,190.38 : x
  2. Step 2: Convert to fraction form
    14,904.68/20,568.36 = 8,190.38/x
  3. Step 3: Cross multiply
    14,904.68x = 20,568.36 × 8,190.38
  4. Step 4: Simplify right side
    14,904.68x = 168,462,684.38
  5. Step 5: Solve for x
    x = 168,462,684.38/14,904.68
  6. Step 6: Final answer
    x = 11,302.67

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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.