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Finding the Fourth Proportional to 15,576.66, 21,495.27 and 8,863.02

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Solution

The fourth proportional to 15,576.66, 21,495.27 and 8,863.02 is: 12,230.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,576.66 : 21,495.27 = 8,863.02 : x
  2. Step 2: Convert to fraction form
    15,576.66/21,495.27 = 8,863.02/x
  3. Step 3: Cross multiply
    15,576.66x = 21,495.27 × 8,863.02
  4. Step 4: Simplify right side
    15,576.66x = 190,513,007.92
  5. Step 5: Solve for x
    x = 190,513,007.92/15,576.66
  6. Step 6: Final answer
    x = 12,230.67

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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.