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Finding the Fourth Proportional to 57,447.40, 86,179.20 and 18,000.40

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Solution

The fourth proportional to 57,447.40, 86,179.20 and 18,000.40 is: 27,003.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,447.40 : 86,179.20 = 18,000.40 : x
  2. Step 2: Convert to fraction form
    57,447.40/86,179.20 = 18,000.40/x
  3. Step 3: Cross multiply
    57,447.40x = 86,179.20 × 18,000.40
  4. Step 4: Simplify right side
    57,447.40x = 1,551,260,071.68
  5. Step 5: Solve for x
    x = 1,551,260,071.68/57,447.40
  6. Step 6: Final answer
    x = 27,003.14

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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.