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Finding the Fourth Proportional to 14,496.80, 21,716.40 and 8,333.60

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Solution

The fourth proportional to 14,496.80, 21,716.40 and 8,333.60 is: 12,483.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,496.80 : 21,716.40 = 8,333.60 : x
  2. Step 2: Convert to fraction form
    14,496.80/21,716.40 = 8,333.60/x
  3. Step 3: Cross multiply
    14,496.80x = 21,716.40 × 8,333.60
  4. Step 4: Simplify right side
    14,496.80x = 180,975,791.04
  5. Step 5: Solve for x
    x = 180,975,791.04/14,496.80
  6. Step 6: Final answer
    x = 12,483.84

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Why These Related Problems?

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