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Finding the Fourth Proportional to 14,556.80, 21,802.80 and 11,964.80

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Solution

The fourth proportional to 14,556.80, 21,802.80 and 11,964.80 is: 17,920.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,556.80 : 21,802.80 = 11,964.80 : x
  2. Step 2: Convert to fraction form
    14,556.80/21,802.80 = 11,964.80/x
  3. Step 3: Cross multiply
    14,556.80x = 21,802.80 × 11,964.80
  4. Step 4: Simplify right side
    14,556.80x = 260,866,141.44
  5. Step 5: Solve for x
    x = 260,866,141.44/14,556.80
  6. Step 6: Final answer
    x = 17,920.57

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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.