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Finding the Fourth Proportional to 18,793.60, 28,226.56 and 18,036.32

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Solution

The fourth proportional to 18,793.60, 28,226.56 and 18,036.32 is: 27,089.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,793.60 : 28,226.56 = 18,036.32 : x
  2. Step 2: Convert to fraction form
    18,793.60/28,226.56 = 18,036.32/x
  3. Step 3: Cross multiply
    18,793.60x = 28,226.56 × 18,036.32
  4. Step 4: Simplify right side
    18,793.60x = 509,103,268.66
  5. Step 5: Solve for x
    x = 509,103,268.66/18,793.60
  6. Step 6: Final answer
    x = 27,089.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.