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Finding the Fourth Proportional to 12,264.40, 18,418.20 and 11,875.60

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Solution

The fourth proportional to 12,264.40, 18,418.20 and 11,875.60 is: 17,834.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,264.40 : 18,418.20 = 11,875.60 : x
  2. Step 2: Convert to fraction form
    12,264.40/18,418.20 = 11,875.60/x
  3. Step 3: Cross multiply
    12,264.40x = 18,418.20 × 11,875.60
  4. Step 4: Simplify right side
    12,264.40x = 218,727,175.92
  5. Step 5: Solve for x
    x = 218,727,175.92/12,264.40
  6. Step 6: Final answer
    x = 17,834.32

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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.