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Finding the Fourth Proportional to 12,135.52, 18,191.94 and 6,580.72

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Solution

The fourth proportional to 12,135.52, 18,191.94 and 6,580.72 is: 9,864.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,135.52 : 18,191.94 = 6,580.72 : x
  2. Step 2: Convert to fraction form
    12,135.52/18,191.94 = 6,580.72/x
  3. Step 3: Cross multiply
    12,135.52x = 18,191.94 × 6,580.72
  4. Step 4: Simplify right side
    12,135.52x = 119,716,063.40
  5. Step 5: Solve for x
    x = 119,716,063.40/12,135.52
  6. Step 6: Final answer
    x = 9,864.93

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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.