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Finding the Fourth Proportional to 14,616.69, 21,928.28 and 6,821.25

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Solution

The fourth proportional to 14,616.69, 21,928.28 and 6,821.25 is: 10,233.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,616.69 : 21,928.28 = 6,821.25 : x
  2. Step 2: Convert to fraction form
    14,616.69/21,928.28 = 6,821.25/x
  3. Step 3: Cross multiply
    14,616.69x = 21,928.28 × 6,821.25
  4. Step 4: Simplify right side
    14,616.69x = 149,578,245.84
  5. Step 5: Solve for x
    x = 149,578,245.84/14,616.69
  6. Step 6: Final answer
    x = 10,233.39

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1.5x scale

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.