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Finding the Fourth Proportional to 13,444.54, 20,160.64 and 7,900.49

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Solution

The fourth proportional to 13,444.54, 20,160.64 and 7,900.49 is: 11,847.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,444.54 : 20,160.64 = 7,900.49 : x
  2. Step 2: Convert to fraction form
    13,444.54/20,160.64 = 7,900.49/x
  3. Step 3: Cross multiply
    13,444.54x = 20,160.64 × 7,900.49
  4. Step 4: Simplify right side
    13,444.54x = 159,278,934.71
  5. Step 5: Solve for x
    x = 159,278,934.71/13,444.54
  6. Step 6: Final answer
    x = 11,847.11

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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.