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Finding the Fourth Proportional to 18,892.48, 26,078.64 and 16,229.20

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Solution

The fourth proportional to 18,892.48, 26,078.64 and 16,229.20 is: 22,402.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,892.48 : 26,078.64 = 16,229.20 : x
  2. Step 2: Convert to fraction form
    18,892.48/26,078.64 = 16,229.20/x
  3. Step 3: Cross multiply
    18,892.48x = 26,078.64 × 16,229.20
  4. Step 4: Simplify right side
    18,892.48x = 423,235,464.29
  5. Step 5: Solve for x
    x = 423,235,464.29/18,892.48
  6. Step 6: Final answer
    x = 22,402.32

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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.