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Finding the Fourth Proportional to 18,724.44, 28,084.80 and 4,873.44

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Solution

The fourth proportional to 18,724.44, 28,084.80 and 4,873.44 is: 7,309.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,724.44 : 28,084.80 = 4,873.44 : x
  2. Step 2: Convert to fraction form
    18,724.44/28,084.80 = 4,873.44/x
  3. Step 3: Cross multiply
    18,724.44x = 28,084.80 × 4,873.44
  4. Step 4: Simplify right side
    18,724.44x = 136,869,587.71
  5. Step 5: Solve for x
    x = 136,869,587.71/18,724.44
  6. Step 6: Final answer
    x = 7,309.68

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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.