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Finding the Fourth Proportional to 18,965.37, 26,160.92 and 12,254.94

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Solution

The fourth proportional to 18,965.37, 26,160.92 and 12,254.94 is: 16,904.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,965.37 : 26,160.92 = 12,254.94 : x
  2. Step 2: Convert to fraction form
    18,965.37/26,160.92 = 12,254.94/x
  3. Step 3: Cross multiply
    18,965.37x = 26,160.92 × 12,254.94
  4. Step 4: Simplify right side
    18,965.37x = 320,600,504.94
  5. Step 5: Solve for x
    x = 320,600,504.94/18,965.37
  6. Step 6: Final answer
    x = 16,904.52

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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.