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Finding the Fourth Proportional to 8,662.74, 11,954.64 and 5,076.90

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Solution

The fourth proportional to 8,662.74, 11,954.64 and 5,076.90 is: 7,006.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,662.74 : 11,954.64 = 5,076.90 : x
  2. Step 2: Convert to fraction form
    8,662.74/11,954.64 = 5,076.90/x
  3. Step 3: Cross multiply
    8,662.74x = 11,954.64 × 5,076.90
  4. Step 4: Simplify right side
    8,662.74x = 60,692,511.82
  5. Step 5: Solve for x
    x = 60,692,511.82/8,662.74
  6. Step 6: Final answer
    x = 7,006.16

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1.5x scale

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.