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Finding the Fourth Proportional to 14,666.60, 21,991.80 and 4,800.80

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Solution

The fourth proportional to 14,666.60, 21,991.80 and 4,800.80 is: 7,198.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,666.60 : 21,991.80 = 4,800.80 : x
  2. Step 2: Convert to fraction form
    14,666.60/21,991.80 = 4,800.80/x
  3. Step 3: Cross multiply
    14,666.60x = 21,991.80 × 4,800.80
  4. Step 4: Simplify right side
    14,666.60x = 105,578,233.44
  5. Step 5: Solve for x
    x = 105,578,233.44/14,666.60
  6. Step 6: Final answer
    x = 7,198.55

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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.