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Finding the Fourth Proportional to 18,774.56, 25,908.74 and 10,276.84

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Solution

The fourth proportional to 18,774.56, 25,908.74 and 10,276.84 is: 14,181.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,774.56 : 25,908.74 = 10,276.84 : x
  2. Step 2: Convert to fraction form
    18,774.56/25,908.74 = 10,276.84/x
  3. Step 3: Cross multiply
    18,774.56x = 25,908.74 × 10,276.84
  4. Step 4: Simplify right side
    18,774.56x = 266,259,975.58
  5. Step 5: Solve for x
    x = 266,259,975.58/18,774.56
  6. Step 6: Final answer
    x = 14,181.96

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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.