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Finding the Fourth Proportional to 13,895.49, 20,843.13 and 11,810.55

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Solution

The fourth proportional to 13,895.49, 20,843.13 and 11,810.55 is: 17,715.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,895.49 : 20,843.13 = 11,810.55 : x
  2. Step 2: Convert to fraction form
    13,895.49/20,843.13 = 11,810.55/x
  3. Step 3: Cross multiply
    13,895.49x = 20,843.13 × 11,810.55
  4. Step 4: Simplify right side
    13,895.49x = 246,168,829.02
  5. Step 5: Solve for x
    x = 246,168,829.02/13,895.49
  6. Step 6: Final answer
    x = 17,715.74

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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.