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Finding the Fourth Proportional to 14,664.80, 21,964.80 and 11,367.20

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Solution

The fourth proportional to 14,664.80, 21,964.80 and 11,367.20 is: 17,025.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,664.80 : 21,964.80 = 11,367.20 : x
  2. Step 2: Convert to fraction form
    14,664.80/21,964.80 = 11,367.20/x
  3. Step 3: Cross multiply
    14,664.80x = 21,964.80 × 11,367.20
  4. Step 4: Simplify right side
    14,664.80x = 249,678,274.56
  5. Step 5: Solve for x
    x = 249,678,274.56/14,664.80
  6. Step 6: Final answer
    x = 17,025.69

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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.