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Finding the Fourth Proportional to 12,662.92, 18,988.87 and 4,866.25

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Solution

The fourth proportional to 12,662.92, 18,988.87 and 4,866.25 is: 7,297.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,662.92 : 18,988.87 = 4,866.25 : x
  2. Step 2: Convert to fraction form
    12,662.92/18,988.87 = 4,866.25/x
  3. Step 3: Cross multiply
    12,662.92x = 18,988.87 × 4,866.25
  4. Step 4: Simplify right side
    12,662.92x = 92,404,588.64
  5. Step 5: Solve for x
    x = 92,404,588.64/12,662.92
  6. Step 6: Final answer
    x = 7,297.26

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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.