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Finding the Fourth Proportional to 16,655.08, 22,978.50 and 10,992.64

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Solution

The fourth proportional to 16,655.08, 22,978.50 and 10,992.64 is: 15,166.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,655.08 : 22,978.50 = 10,992.64 : x
  2. Step 2: Convert to fraction form
    16,655.08/22,978.50 = 10,992.64/x
  3. Step 3: Cross multiply
    16,655.08x = 22,978.50 × 10,992.64
  4. Step 4: Simplify right side
    16,655.08x = 252,594,378.24
  5. Step 5: Solve for x
    x = 252,594,378.24/16,655.08
  6. Step 6: Final answer
    x = 15,166.21

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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.