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Finding the Fourth Proportional to 18,900.64, 26,023.40 and 16,062.40

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Solution

The fourth proportional to 18,900.64, 26,023.40 and 16,062.40 is: 22,115.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,900.64 : 26,023.40 = 16,062.40 : x
  2. Step 2: Convert to fraction form
    18,900.64/26,023.40 = 16,062.40/x
  3. Step 3: Cross multiply
    18,900.64x = 26,023.40 × 16,062.40
  4. Step 4: Simplify right side
    18,900.64x = 417,998,260.16
  5. Step 5: Solve for x
    x = 417,998,260.16/18,900.64
  6. Step 6: Final answer
    x = 22,115.56

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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.