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Finding the Fourth Proportional to 12,483.96, 18,724.64 and 4,163.06

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Solution

The fourth proportional to 12,483.96, 18,724.64 and 4,163.06 is: 6,244.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,483.96 : 18,724.64 = 4,163.06 : x
  2. Step 2: Convert to fraction form
    12,483.96/18,724.64 = 4,163.06/x
  3. Step 3: Cross multiply
    12,483.96x = 18,724.64 × 4,163.06
  4. Step 4: Simplify right side
    12,483.96x = 77,951,825.79
  5. Step 5: Solve for x
    x = 77,951,825.79/12,483.96
  6. Step 6: Final answer
    x = 6,244.16

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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.