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Finding the Fourth Proportional to 11,867.94, 16,362.87 and 7,611.49

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Solution

The fourth proportional to 11,867.94, 16,362.87 and 7,611.49 is: 10,494.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,867.94 : 16,362.87 = 7,611.49 : x
  2. Step 2: Convert to fraction form
    11,867.94/16,362.87 = 7,611.49/x
  3. Step 3: Cross multiply
    11,867.94x = 16,362.87 × 7,611.49
  4. Step 4: Simplify right side
    11,867.94x = 124,545,783.32
  5. Step 5: Solve for x
    x = 124,545,783.32/11,867.94
  6. Step 6: Final answer
    x = 10,494.31

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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.