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Finding the Fourth Proportional to 18,259.60, 27,353.86 and 12,000.74

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Solution

The fourth proportional to 18,259.60, 27,353.86 and 12,000.74 is: 17,977.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,259.60 : 27,353.86 = 12,000.74 : x
  2. Step 2: Convert to fraction form
    18,259.60/27,353.86 = 12,000.74/x
  3. Step 3: Cross multiply
    18,259.60x = 27,353.86 × 12,000.74
  4. Step 4: Simplify right side
    18,259.60x = 328,266,561.86
  5. Step 5: Solve for x
    x = 328,266,561.86/18,259.60
  6. Step 6: Final answer
    x = 17,977.75

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.