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Finding the Fourth Proportional to 18,959.56, 28,439.22 and 6,473.56

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Solution

The fourth proportional to 18,959.56, 28,439.22 and 6,473.56 is: 9,710.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,959.56 : 28,439.22 = 6,473.56 : x
  2. Step 2: Convert to fraction form
    18,959.56/28,439.22 = 6,473.56/x
  3. Step 3: Cross multiply
    18,959.56x = 28,439.22 × 6,473.56
  4. Step 4: Simplify right side
    18,959.56x = 184,102,997.02
  5. Step 5: Solve for x
    x = 184,102,997.02/18,959.56
  6. Step 6: Final answer
    x = 9,710.30

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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.