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Finding the Fourth Proportional to 18,607.59, 27,911.34 and 5,459.94

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Solution

The fourth proportional to 18,607.59, 27,911.34 and 5,459.94 is: 8,189.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,607.59 : 27,911.34 = 5,459.94 : x
  2. Step 2: Convert to fraction form
    18,607.59/27,911.34 = 5,459.94/x
  3. Step 3: Cross multiply
    18,607.59x = 27,911.34 × 5,459.94
  4. Step 4: Simplify right side
    18,607.59x = 152,394,241.72
  5. Step 5: Solve for x
    x = 152,394,241.72/18,607.59
  6. Step 6: Final answer
    x = 8,189.90

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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.